57247390 has 16 divisors (see below), whose sum is σ = 106369920. Its totient is φ = 22160160.

The previous prime is 57247349. The next prime is 57247397. The reversal of 57247390 is 9374275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57247397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92025 + ... + 92644.

It is an arithmetic number, because the mean of its divisors is an integer number (6648120).

Almost surely, 2^57247390 is an apocalyptic number.

57247390 is a deficient number, since it is larger than the sum of its proper divisors (49122530).

57247390 is a wasteful number, since it uses less digits than its factorization.

57247390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184707.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 57247390 is about 7566.2004995903. The cubic root of 57247390 is about 385.4060819039.

The spelling of 57247390 in words is "fifty-seven million, two hundred forty-seven thousand, three hundred ninety".