56455559 has 2 divisors, whose sum is σ = 56455560. Its totient is φ = 56455558.

The previous prime is 56455541. The next prime is 56455573. The reversal of 56455559 is 95555465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56455559 - 2²⁴ = 39678343 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 (56452559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28227779 + 28227780.

It is an arithmetic number, because the mean of its divisors is an integer number (28227780).

Almost surely, 2^56455559 is an apocalyptic number.

56455559 is a deficient number, since it is larger than the sum of its proper divisors (1).

56455559 is an equidigital number, since it uses as much as digits as its factorization.

56455559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 675000, while the sum is 44.

The square root of 56455559 is about 7513.6914363048. The cubic root of 56455559 is about 383.6208800712.

The spelling of 56455559 in words is "fifty-six million, four hundred fifty-five thousand, five hundred fifty-nine".