57271999 has 4 divisors (see below), whose sum is σ = 57295864. Its totient is φ = 57248136.

The previous prime is 57271969. The next prime is 57272029. The reversal of 57271999 is 99917275.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (57271969) and next prime (57272029).

It is a cyclic number.

It is not a de Polignac number, because 57271999 - 2²³ = 48883391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57271969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7872 + ... + 13285.

It is an arithmetic number, because the mean of its divisors is an integer number (14323966).

Almost surely, 2^57271999 is an apocalyptic number.

57271999 is a deficient number, since it is larger than the sum of its proper divisors (23865).

57271999 is a wasteful number, since it uses less digits than its factorization.

57271999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23864.

The product of its digits is 357210, while the sum is 49.

The square root of 57271999 is about 7567.8265704230. The cubic root of 57271999 is about 385.4612989748.

The spelling of 57271999 in words is "fifty-seven million, two hundred seventy-one thousand, nine hundred ninety-nine".