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57194248981 = 379463163351
BaseRepresentation
bin110101010001000010…
…101111101100010101
312110121222001212220211
4311101002233230111
51414113211431411
642135155125421
74063220044402
oct652102575425
9173558055824
1057194248981
112228a731871
12b1022a3871
13551639839c
142aa7db32a9
15174b27e221
hexd510afb15

57194248981 has 8 divisors (see below), whose sum is σ = 58746606464. Its totient is φ = 55642237200.

The previous prime is 57194248973. The next prime is 57194248997. The reversal of 57194248981 is 18984249175.

57194248981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57194248981 - 23 = 57194248973 is a prime.

It is a super-2 number, since 2×571942489812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57194248931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268456 + ... + 431806.

It is an arithmetic number, because the mean of its divisors is an integer number (7343325808).

Almost surely, 257194248981 is an apocalyptic number.

It is an amenable number.

57194248981 is a deficient number, since it is larger than the sum of its proper divisors (1552357483).

57194248981 is a wasteful number, since it uses less digits than its factorization.

57194248981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172851.

The product of its digits is 5806080, while the sum is 58.

The spelling of 57194248981 in words is "fifty-seven billion, one hundred ninety-four million, two hundred forty-eight thousand, nine hundred eighty-one".

Divisors: 1 37 9463 163351 350131 6043987 1545790513 57194248981