57077765 has 8 divisors (see below), whose sum is σ = 68749560. Its totient is φ = 45491392.

The previous prime is 57077753. The next prime is 57077773. The reversal of 57077765 is 56777075.

It can be written as a sum of positive squares in 4 ways, for example, as 10647169 + 46430596 = 3263^2 + 6814^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 57077765 - 2⁸ = 57077509 is a prime.

It is a congruent number.

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, 19874 + ... + 22563.

It is an arithmetic number, because the mean of its divisors is an integer number (8593695).

Almost surely, 2^57077765 is an apocalyptic number.

It is an amenable number.

57077765 is a deficient number, since it is larger than the sum of its proper divisors (11671795).

57077765 is a wasteful number, since it uses less digits than its factorization.

57077765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42711.

The product of its (nonzero) digits is 360150, while the sum is 44.

The square root of 57077765 is about 7554.9827928328. The cubic root of 57077765 is about 385.0250503743.

The spelling of 57077765 in words is "fifty-seven million, seventy-seven thousand, seven hundred sixty-five".