56899481 has 2 divisors, whose sum is σ = 56899482. Its totient is φ = 56899480.

The previous prime is 56899439. The next prime is 56899483. The reversal of 56899481 is 18499865.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50694400 + 6205081 = 7120^2 + 2491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56899481 is a prime.

It is a super-2 number, since 2×56899481² = 6475101876138722, which contains 22 as substring.

Together with 56899483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56899483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28449740 + 28449741.

It is an arithmetic number, because the mean of its divisors is an integer number (28449741).

Almost surely, 2^56899481 is an apocalyptic number.

It is an amenable number.

56899481 is a deficient number, since it is larger than the sum of its proper divisors (1).

56899481 is an equidigital number, since it uses as much as digits as its factorization.

56899481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 50.

The square root of 56899481 is about 7543.1744643751. The cubic root of 56899481 is about 384.6237534148.

The spelling of 56899481 in words is "fifty-six million, eight hundred ninety-nine thousand, four hundred eighty-one".