57197397 has 8 divisors (see below), whose sum is σ = 76360480. Its totient is φ = 38082960.

The previous prime is 57197377. The next prime is 57197407. The reversal of 57197397 is 79379175.

57197397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57197397 - 2¹⁸ = 56935253 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 (57197347) 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, 9322 + ... + 14187.

It is an arithmetic number, because the mean of its divisors is an integer number (9545060).

Almost surely, 2^57197397 is an apocalyptic number.

It is an amenable number.

57197397 is a deficient number, since it is larger than the sum of its proper divisors (19163083).

57197397 is a wasteful number, since it uses less digits than its factorization.

57197397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24323.

The product of its digits is 416745, while the sum is 48.

The square root of 57197397 is about 7562.8960722728. The cubic root of 57197397 is about 385.2938600912.

The spelling of 57197397 in words is "fifty-seven million, one hundred ninety-seven thousand, three hundred ninety-seven".