57148191 has 12 divisors (see below), whose sum is σ = 82730232. Its totient is φ = 38014416.

The previous prime is 57148187. The next prime is 57148249. The reversal of 57148191 is 19184175.

57148191 is a `hidden beast` number, since 571 + 4 + 81 + 9 + 1 = 666.

It is not a de Polignac number, because 57148191 - 2² = 57148187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57148111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2596 + ... + 11001.

It is an arithmetic number, because the mean of its divisors is an integer number (6894186).

Almost surely, 2^57148191 is an apocalyptic number.

57148191 is a deficient number, since it is larger than the sum of its proper divisors (25582041).

57148191 is a wasteful number, since it uses less digits than its factorization.

57148191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14070 (or 14067 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 57148191 is about 7559.6422534403. The cubic root of 57148191 is about 385.1833410238.

The spelling of 57148191 in words is "fifty-seven million, one hundred forty-eight thousand, one hundred ninety-one".