56440877 has 2 divisors, whose sum is σ = 56440878. Its totient is φ = 56440876.

The previous prime is 56440861. The next prime is 56440927. The reversal of 56440877 is 77804465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47596201 + 8844676 = 6899^2 + 2974^2 .

It is a cyclic number.

It is not a de Polignac number, because 56440877 - 2⁴ = 56440861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56440837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28220438 + 28220439.

It is an arithmetic number, because the mean of its divisors is an integer number (28220439).

Almost surely, 2^56440877 is an apocalyptic number.

It is an amenable number.

56440877 is a deficient number, since it is larger than the sum of its proper divisors (1).

56440877 is an equidigital number, since it uses as much as digits as its factorization.

56440877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 56440877 is about 7512.7143563429. The cubic root of 56440877 is about 383.5876219936.

The spelling of 56440877 in words is "fifty-six million, four hundred forty thousand, eight hundred seventy-seven".