57276381 has 8 divisors (see below), whose sum is σ = 76562464. Its totient is φ = 38087280.

The previous prime is 57276361. The next prime is 57276389. The reversal of 57276381 is 18367275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57276381 - 2¹⁴ = 57259997 is a prime.

It is a super-2 number, since 2×57276381² = 6561167640914322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57276389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22855 + ... + 25236.

It is an arithmetic number, because the mean of its divisors is an integer number (9570308).

Almost surely, 2^57276381 is an apocalyptic number.

It is an amenable number.

57276381 is a deficient number, since it is larger than the sum of its proper divisors (19286083).

57276381 is a wasteful number, since it uses less digits than its factorization.

57276381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48491.

The product of its digits is 70560, while the sum is 39.

The square root of 57276381 is about 7568.1160799766. The cubic root of 57276381 is about 385.4711295398.

The spelling of 57276381 in words is "fifty-seven million, two hundred seventy-six thousand, three hundred eighty-one".