57531845 has 16 divisors (see below), whose sum is σ = 80197248. Its totient is φ = 38802240.

The previous prime is 57531839. The next prime is 57531847. The reversal of 57531845 is 54813575.

It is not a de Polignac number, because 57531845 - 2⁸ = 57531589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57531799 and 57531808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57531847) 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 15 ways as a sum of consecutive naturals, for example, 11339 + ... + 15608.

It is an arithmetic number, because the mean of its divisors is an integer number (5012328).

Almost surely, 2^57531845 is an apocalyptic number.

It is an amenable number.

57531845 is a deficient number, since it is larger than the sum of its proper divisors (22665403).

57531845 is a wasteful number, since it uses less digits than its factorization.

57531845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27020.

The product of its digits is 84000, while the sum is 38.

The square root of 57531845 is about 7584.9749505190. The cubic root of 57531845 is about 386.0433721298.

The spelling of 57531845 in words is "fifty-seven million, five hundred thirty-one thousand, eight hundred forty-five".