57116251 has 4 divisors (see below), whose sum is σ = 57136104. Its totient is φ = 57096400.

The previous prime is 57116249. The next prime is 57116273. The reversal of 57116251 is 15261175.

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

It is a cyclic number.

It is not a de Polignac number, because 57116251 - 2¹ = 57116249 is a prime.

It is a super-2 number, since 2×57116251² = 6524532256590002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57116221) 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, 4690 + ... + 11671.

It is an arithmetic number, because the mean of its divisors is an integer number (14284026).

Almost surely, 2^57116251 is an apocalyptic number.

57116251 is a deficient number, since it is larger than the sum of its proper divisors (19853).

57116251 is a wasteful number, since it uses less digits than its factorization.

57116251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19852.

The product of its digits is 2100, while the sum is 28.

The square root of 57116251 is about 7557.5294243556. The cubic root of 57116251 is about 385.1115682729. Note that the first 3 decimals are identical.

The spelling of 57116251 in words is "fifty-seven million, one hundred sixteen thousand, two hundred fifty-one".