57372247 has 4 divisors (see below), whose sum is σ = 57880080. Its totient is φ = 56864416.

The previous prime is 57372241. The next prime is 57372283. The reversal of 57372247 is 74227375.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57372247 - 2³ = 57372239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57372241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253747 + ... + 253972.

It is an arithmetic number, because the mean of its divisors is an integer number (14470020).

Almost surely, 2^57372247 is an apocalyptic number.

57372247 is a deficient number, since it is larger than the sum of its proper divisors (507833).

57372247 is a wasteful number, since it uses less digits than its factorization.

57372247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507832.

The product of its digits is 82320, while the sum is 37.

The square root of 57372247 is about 7574.4469765125. The cubic root of 57372247 is about 385.6860696650.

The spelling of 57372247 in words is "fifty-seven million, three hundred seventy-two thousand, two hundred forty-seven".