57191049 has 8 divisors (see below), whose sum is σ = 84727520. Its totient is φ = 38127348.

The previous prime is 57191039. The next prime is 57191051. The reversal of 57191049 is 94019175.

It is not a de Polignac number, because 57191049 - 2⁴ = 57191033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57191039) 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, 1059067 + ... + 1059120.

It is an arithmetic number, because the mean of its divisors is an integer number (10590940).

Almost surely, 2^57191049 is an apocalyptic number.

It is an amenable number.

57191049 is a deficient number, since it is larger than the sum of its proper divisors (27536471).

57191049 is a wasteful number, since it uses less digits than its factorization.

57191049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118196 (or 2118190 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 57191049 is about 7562.4763801284. The cubic root of 57191049 is about 385.2796057367.

The spelling of 57191049 in words is "fifty-seven million, one hundred ninety-one thousand, forty-nine".