57191975 has 6 divisors (see below), whose sum is σ = 70918080. Its totient is φ = 45753560.

The previous prime is 57191963. The next prime is 57191977. The reversal of 57191975 is 57919175.

It is not a de Polignac number, because 57191975 - 2¹⁰ = 57190951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57191977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1143815 + ... + 1143864.

It is an arithmetic number, because the mean of its divisors is an integer number (11819680).

Almost surely, 2^57191975 is an apocalyptic number.

57191975 is a deficient number, since it is larger than the sum of its proper divisors (13726105).

57191975 is a wasteful number, since it uses less digits than its factorization.

57191975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287689 (or 2287684 counting only the distinct ones).

The product of its digits is 99225, while the sum is 44.

The square root of 57191975 is about 7562.5376032123. The cubic root of 57191975 is about 385.2816851238.

The spelling of 57191975 in words is "fifty-seven million, one hundred ninety-one thousand, nine hundred seventy-five".