57421197 has 16 divisors (see below), whose sum is σ = 87144960. Its totient is φ = 37346400.

The previous prime is 57421183. The next prime is 57421237. The reversal of 57421197 is 79112475.

It is a happy number.

It is not a de Polignac number, because 57421197 - 2⁸ = 57420941 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57421157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24829 + ... + 27042.

It is an arithmetic number, because the mean of its divisors is an integer number (5446560).

Almost surely, 2^57421197 is an apocalyptic number.

It is an amenable number.

57421197 is a deficient number, since it is larger than the sum of its proper divisors (29723763).

57421197 is a wasteful number, since it uses less digits than its factorization.

57421197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51921 (or 51915 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 57421197 is about 7577.6775465838. The cubic root of 57421197 is about 385.7957275999.

The spelling of 57421197 in words is "fifty-seven million, four hundred twenty-one thousand, one hundred ninety-seven".