57055761 has 12 divisors (see below), whose sum is σ = 94187392. Its totient is φ = 32603256.

The previous prime is 57055759. The next prime is 57055783. The reversal of 57055761 is 16755075.

It is not a de Polignac number, because 57055761 - 2¹ = 57055759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57055721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 452761 + ... + 452886.

Almost surely, 2^57055761 is an apocalyptic number.

It is an amenable number.

57055761 is a deficient number, since it is larger than the sum of its proper divisors (37131631).

57055761 is a wasteful number, since it uses less digits than its factorization.

57055761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905660 (or 905657 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 57055761 is about 7553.5263950025. The cubic root of 57055761 is about 384.9755671232.

The spelling of 57055761 in words is "fifty-seven million, fifty-five thousand, seven hundred sixty-one".