56440555 has 8 divisors (see below), whose sum is σ = 68839344. Its totient is φ = 44412000.

The previous prime is 56440547. The next prime is 56440603. The reversal of 56440555 is 55504465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56440555 - 2³ = 56440547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56440555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92221 + ... + 92830.

It is an arithmetic number, because the mean of its divisors is an integer number (8604918).

Almost surely, 2^56440555 is an apocalyptic number.

56440555 is a deficient number, since it is larger than the sum of its proper divisors (12398789).

56440555 is a wasteful number, since it uses less digits than its factorization.

56440555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185117.

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 56440555 is about 7512.6929259753. The cubic root of 56440555 is about 383.5868925255.

The spelling of 56440555 in words is "fifty-six million, four hundred forty thousand, five hundred fifty-five".