57945905 has 4 divisors (see below), whose sum is σ = 69535092. Its totient is φ = 46356720.

The previous prime is 57945889. The next prime is 57945919. The reversal of 57945905 is 50954975.

It is a happy number.

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 25090081 + 32855824 = 5009^2 + 5732^2 .

It is not a de Polignac number, because 57945905 - 2⁴ = 57945889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5794586 + ... + 5794595.

It is an arithmetic number, because the mean of its divisors is an integer number (17383773).

Almost surely, 2^57945905 is an apocalyptic number.

It is an amenable number.

57945905 is a deficient number, since it is larger than the sum of its proper divisors (11589187).

57945905 is a wasteful number, since it uses less digits than its factorization.

57945905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11589186.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 57945905 is about 7612.2207666357. The cubic root of 57945905 is about 386.9672846348.

The spelling of 57945905 in words is "fifty-seven million, nine hundred forty-five thousand, nine hundred five".