57145347 has 48 divisors (see below), whose sum is σ = 100751040. Its totient is φ = 30468096.

The previous prime is 57145337. The next prime is 57145351. The reversal of 57145347 is 74354175.

It is a happy number.

57145347 is a `hidden beast` number, since 571 + 45 + 3 + 47 = 666.

It is not a de Polignac number, because 57145347 - 2⁷ = 57145219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57145337) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245143 + ... + 245375.

It is an arithmetic number, because the mean of its divisors is an integer number (2098980).

Almost surely, 2^57145347 is an apocalyptic number.

57145347 is a deficient number, since it is larger than the sum of its proper divisors (43605693).

57145347 is a wasteful number, since it uses less digits than its factorization.

57145347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 489 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 57145347 is about 7559.4541469606. The cubic root of 57145347 is about 385.1769513226.

The spelling of 57145347 in words is "fifty-seven million, one hundred forty-five thousand, three hundred forty-seven".