57057477 has 8 divisors (see below), whose sum is σ = 76149216. Its totient is φ = 38002032.

The previous prime is 57057463. The next prime is 57057487. The reversal of 57057477 is 77475075.

It is a happy number.

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

It is not a de Polignac number, because 57057477 - 2⁴ = 57057461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57057487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5163 + ... + 11864.

It is an arithmetic number, because the mean of its divisors is an integer number (9518652).

Almost surely, 2^57057477 is an apocalyptic number.

It is an amenable number.

57057477 is a deficient number, since it is larger than the sum of its proper divisors (19091739).

57057477 is a wasteful number, since it uses less digits than its factorization.

57057477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18147.

The product of its (nonzero) digits is 240100, while the sum is 42.

The square root of 57057477 is about 7553.6399834782. The cubic root of 57057477 is about 384.9794265725.

The spelling of 57057477 in words is "fifty-seven million, fifty-seven thousand, four hundred seventy-seven".