56449691 has 2 divisors, whose sum is σ = 56449692. Its totient is φ = 56449690.

The previous prime is 56449663. The next prime is 56449697. The reversal of 56449691 is 19694465.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56449691 is a prime.

It is a super-2 number, since 2×56449691² = 6373135227990962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56449697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28224845 + 28224846.

It is an arithmetic number, because the mean of its divisors is an integer number (28224846).

Almost surely, 2^56449691 is an apocalyptic number.

56449691 is a deficient number, since it is larger than the sum of its proper divisors (1).

56449691 is an equidigital number, since it uses as much as digits as its factorization.

56449691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 56449691 is about 7513.3009390014. The cubic root of 56449691 is about 383.6075884050.

The spelling of 56449691 in words is "fifty-six million, four hundred forty-nine thousand, six hundred ninety-one".