57047745 has 16 divisors (see below), whose sum is σ = 91469952. Its totient is φ = 30360960.

The previous prime is 57047743. The next prime is 57047789. The reversal of 57047745 is 54774075.

It is not a de Polignac number, because 57047745 - 2¹ = 57047743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57047743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3765 + ... + 11325.

It is an arithmetic number, because the mean of its divisors is an integer number (5716872).

Almost surely, 2^57047745 is an apocalyptic number.

It is an amenable number.

57047745 is a deficient number, since it is larger than the sum of its proper divisors (34422207).

57047745 is a wasteful number, since it uses less digits than its factorization.

57047745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8072.

The product of its (nonzero) digits is 137200, while the sum is 39.

The square root of 57047745 is about 7552.9957632717. The cubic root of 57047745 is about 384.9575373419.

The spelling of 57047745 in words is "fifty-seven million, forty-seven thousand, seven hundred forty-five".