56855507 has 2 divisors, whose sum is σ = 56855508. Its totient is φ = 56855506.

The previous prime is 56855501. The next prime is 56855567. The reversal of 56855507 is 70555865.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56855507 - 2⁶ = 56855443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56855501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28427753 + 28427754.

It is an arithmetic number, because the mean of its divisors is an integer number (28427754).

Almost surely, 2^56855507 is an apocalyptic number.

56855507 is a deficient number, since it is larger than the sum of its proper divisors (1).

56855507 is an equidigital number, since it uses as much as digits as its factorization.

56855507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210000, while the sum is 41.

The square root of 56855507 is about 7540.2590804295. The cubic root of 56855507 is about 384.5246441106.

The spelling of 56855507 in words is "fifty-six million, eight hundred fifty-five thousand, five hundred seven".