57197290 has 16 divisors (see below), whose sum is σ = 103639680. Its totient is φ = 22726800.

The previous prime is 57197279. The next prime is 57197293. The reversal of 57197290 is 9279175.

57197290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (57197293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17430 + ... + 20449.

It is an arithmetic number, because the mean of its divisors is an integer number (6477480).

Almost surely, 2^57197290 is an apocalyptic number.

57197290 is a deficient number, since it is larger than the sum of its proper divisors (46442390).

57197290 is a wasteful number, since it uses less digits than its factorization.

57197290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38037.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 57197290 is about 7562.8889982599. Note that the first 3 decimals coincide. The cubic root of 57197290 is about 385.2936198327.

The spelling of 57197290 in words is "fifty-seven million, one hundred ninety-seven thousand, two hundred ninety".