56511449 has 2 divisors, whose sum is σ = 56511450. Its totient is φ = 56511448.

The previous prime is 56511443. The next prime is 56511467. The reversal of 56511449 is 94411565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40551424 + 15960025 = 6368^2 + 3995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56511449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56511443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28255724 + 28255725.

It is an arithmetic number, because the mean of its divisors is an integer number (28255725).

Almost surely, 2^56511449 is an apocalyptic number.

It is an amenable number.

56511449 is a deficient number, since it is larger than the sum of its proper divisors (1).

56511449 is an equidigital number, since it uses as much as digits as its factorization.

56511449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 56511449 is about 7517.4097267609. The cubic root of 56511449 is about 383.7474309370.

The spelling of 56511449 in words is "fifty-six million, five hundred eleven thousand, four hundred forty-nine".