57077057 has 4 divisors (see below), whose sum is σ = 57144516. Its totient is φ = 57009600.

The previous prime is 57077047. The next prime is 57077071. The reversal of 57077057 is 75077075.

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 49547521 + 7529536 = 7039^2 + 2744^2 .

It is a cyclic number.

It is not a de Polignac number, because 57077057 - 2⁶ = 57076993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57077057.

It is not an unprimeable number, because it can be changed into a prime (57077047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32444 + ... + 34157.

It is an arithmetic number, because the mean of its divisors is an integer number (14286129).

Almost surely, 2^57077057 is an apocalyptic number.

It is an amenable number.

57077057 is a deficient number, since it is larger than the sum of its proper divisors (67459).

57077057 is an equidigital number, since it uses as much as digits as its factorization.

57077057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67458.

The product of its (nonzero) digits is 60025, while the sum is 38.

The square root of 57077057 is about 7554.9359361943. The cubic root of 57077057 is about 385.0234584008.

The spelling of 57077057 in words is "fifty-seven million, seventy-seven thousand, fifty-seven".