57011765 has 16 divisors (see below), whose sum is σ = 70327488. Its totient is φ = 44343936.

The previous prime is 57011749. The next prime is 57011789. The reversal of 57011765 is 56711075.

It is a cyclic number.

It is not a de Polignac number, because 57011765 - 2⁴ = 57011749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60377 + ... + 61313.

It is an arithmetic number, because the mean of its divisors is an integer number (4395468).

Almost surely, 2^57011765 is an apocalyptic number.

It is an amenable number.

57011765 is a deficient number, since it is larger than the sum of its proper divisors (13315723).

57011765 is a wasteful number, since it uses less digits than its factorization.

57011765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 57011765 is about 7550.6135512288. The cubic root of 57011765 is about 384.8765894441.

The spelling of 57011765 in words is "fifty-seven million, eleven thousand, seven hundred sixty-five".