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57543933901 = 131439266671
BaseRepresentation
bin110101100101111000…
…101011111111001101
312111112100001201110011
4311211320223333031
51420322221341101
642234010113221
74104664240066
oct654570537715
9174470051404
1057543933901
112244a061273
12b19b41b811
13557097103c
142adc5db56d
15176bd04751
hexd65e2bfcd

57543933901 has 4 divisors (see below), whose sum is σ = 57983200704. Its totient is φ = 57104667100.

The previous prime is 57543933883. The next prime is 57543933929. The reversal of 57543933901 is 10933934575.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57543933901 - 25 = 57543933869 is a prime.

It is a super-2 number, since 2×575439339012 (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57543933991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219633205 + ... + 219633466.

It is an arithmetic number, because the mean of its divisors is an integer number (14495800176).

Almost surely, 257543933901 is an apocalyptic number.

It is an amenable number.

57543933901 is a deficient number, since it is larger than the sum of its proper divisors (439266803).

57543933901 is a wasteful number, since it uses less digits than its factorization.

57543933901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439266802.

The product of its (nonzero) digits is 1530900, while the sum is 49.

The spelling of 57543933901 in words is "fifty-seven billion, five hundred forty-three million, nine hundred thirty-three thousand, nine hundred one".

Divisors: 1 131 439266671 57543933901