57688745 has 4 divisors (see below), whose sum is σ = 69226500. Its totient is φ = 46150992.

The previous prime is 57688739. The next prime is 57688747. The reversal of 57688745 is 54788675.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42094144 + 15594601 = 6488^2 + 3949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57688745 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57688693 and 57688702.

It is not an unprimeable number, because it can be changed into a prime (57688747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5768870 + ... + 5768879.

It is an arithmetic number, because the mean of its divisors is an integer number (17306625).

Almost surely, 2^57688745 is an apocalyptic number.

It is an amenable number.

57688745 is a deficient number, since it is larger than the sum of its proper divisors (11537755).

57688745 is a wasteful number, since it uses less digits than its factorization.

57688745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11537754.

The product of its digits is 1881600, while the sum is 50.

The square root of 57688745 is about 7595.3107243878. The cubic root of 57688745 is about 386.3939908541.

The spelling of 57688745 in words is "fifty-seven million, six hundred eighty-eight thousand, seven hundred forty-five".