57381032281 has 4 divisors (see below), whose sum is σ = 57383195364. Its totient is φ = 57378869200.

The previous prime is 57381032279. The next prime is 57381032309. The reversal of 57381032281 is 18223018375.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3425175625 + 53955856656 = 58525^2 + 232284^2 .

It is a cyclic number.

It is not a de Polignac number, because 57381032281 - 2¹ = 57381032279 is a prime.

It is a super-2 number, since 2×57381032281² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57381032881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041250 + ... + 1094971.

It is an arithmetic number, because the mean of its divisors is an integer number (14345798841).

Almost surely, 2^57381032281 is an apocalyptic number.

It is an amenable number.

57381032281 is a deficient number, since it is larger than the sum of its proper divisors (2163083).

57381032281 is a wasteful number, since it uses less digits than its factorization.

57381032281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163082.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 57381032281 in words is "fifty-seven billion, three hundred eighty-one million, thirty-two thousand, two hundred eighty-one".