57432145 has 8 divisors (see below), whose sum is σ = 69693480. Its totient is φ = 45429120.

The previous prime is 57432139. The next prime is 57432157. The reversal of 57432145 is 54123475.

It can be written as a sum of positive squares in 4 ways, for example, as 5721664 + 51710481 = 2392^2 + 7191^2 .

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

It is not a de Polignac number, because 57432145 - 2⁷ = 57432017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64086 + ... + 64975.

It is an arithmetic number, because the mean of its divisors is an integer number (8711685).

Almost surely, 2^57432145 is an apocalyptic number.

It is an amenable number.

57432145 is a deficient number, since it is larger than the sum of its proper divisors (12261335).

57432145 is a wasteful number, since it uses less digits than its factorization.

57432145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129155.

The product of its digits is 16800, while the sum is 31.

The square root of 57432145 is about 7578.3998970759. The cubic root of 57432145 is about 385.8202448133.

The spelling of 57432145 in words is "fifty-seven million, four hundred thirty-two thousand, one hundred forty-five".