56830381 has 4 divisors (see below), whose sum is σ = 56914272. Its totient is φ = 56746492.

The previous prime is 56830373. The next prime is 56830399. The reversal of 56830381 is 18303865.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56830381 - 2³ = 56830373 is a prime.

It is a super-2 number, since 2×56830381² = 6459384409210322, 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 (56830321) 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, 40921 + ... + 42286.

It is an arithmetic number, because the mean of its divisors is an integer number (14228568).

Almost surely, 2^56830381 is an apocalyptic number.

It is an amenable number.

56830381 is a deficient number, since it is larger than the sum of its proper divisors (83891).

56830381 is an equidigital number, since it uses as much as digits as its factorization.

56830381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83890.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 56830381 is about 7538.5927731905. The cubic root of 56830381 is about 384.4679917867.

It can be divided in two parts, 5 and 6830381, that added together give a palindrome (6830386).

The spelling of 56830381 in words is "fifty-six million, eight hundred thirty thousand, three hundred eighty-one".