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57472907 = 89645763
BaseRepresentation
bin1101101100111…
…1011110001011
311000010221000012
43123033132023
5104203113112
65411502135
71265340332
oct333173613
9130127005
1057472907
112a495278
12172b794b
13bba394b
1478c0d19
1550a4022
hex36cf78b

57472907 has 4 divisors (see below), whose sum is σ = 58118760. Its totient is φ = 56827056.

The previous prime is 57472901. The next prime is 57472913. The reversal of 57472907 is 70927475.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (57472901) and next prime (57472913).

It is a cyclic number.

It is not a de Polignac number, because 57472907 - 28 = 57472651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57472901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322793 + ... + 322970.

It is an arithmetic number, because the mean of its divisors is an integer number (14529690).

Almost surely, 257472907 is an apocalyptic number.

57472907 is a deficient number, since it is larger than the sum of its proper divisors (645853).

57472907 is an equidigital number, since it uses as much as digits as its factorization.

57472907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645852.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 57472907 is about 7581.0887740482. The cubic root of 57472907 is about 385.9115008258.

The spelling of 57472907 in words is "fifty-seven million, four hundred seventy-two thousand, nine hundred seven".

Divisors: 1 89 645763 57472907