57394191 has 16 divisors (see below), whose sum is σ = 78534144. Its totient is φ = 37266624.

The previous prime is 57394171. The next prime is 57394213. The reversal of 57394191 is 19149375.

It is a happy number.

It is not a de Polignac number, because 57394191 - 2⁷ = 57394063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57394111) 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, 31980 + ... + 33726.

It is an arithmetic number, because the mean of its divisors is an integer number (4908384).

Almost surely, 2^57394191 is an apocalyptic number.

57394191 is a deficient number, since it is larger than the sum of its proper divisors (21139953).

57394191 is a wasteful number, since it uses less digits than its factorization.

57394191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030.

The product of its digits is 34020, while the sum is 39.

The square root of 57394191 is about 7575.8953926252. The cubic root of 57394191 is about 385.7352363890.

The spelling of 57394191 in words is "fifty-seven million, three hundred ninety-four thousand, one hundred ninety-one".