57047765 has 8 divisors (see below), whose sum is σ = 68997120. Its totient is φ = 45278352.

The previous prime is 57047743. The next prime is 57047789. The reversal of 57047765 is 56774075.

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 57047765 - 2⁸ = 57047509 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, 44285 + ... + 45554.

It is an arithmetic number, because the mean of its divisors is an integer number (8624640).

Almost surely, 2^57047765 is an apocalyptic number.

It is an amenable number.

57047765 is a deficient number, since it is larger than the sum of its proper divisors (11949355).

57047765 is a wasteful number, since it uses less digits than its factorization.

57047765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89971.

The product of its (nonzero) digits is 205800, while the sum is 41.

The square root of 57047765 is about 7552.9970872495. The cubic root of 57047765 is about 384.9575823285.

The spelling of 57047765 in words is "fifty-seven million, forty-seven thousand, seven hundred sixty-five".