56155445 has 8 divisors (see below), whose sum is σ = 69030360. Its totient is φ = 43828480.

The previous prime is 56155439. The next prime is 56155453. The reversal of 56155445 is 54455165.

It can be written as a sum of positive squares in 4 ways, for example, as 8282884 + 47872561 = 2878^2 + 6919^2 .

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

It is not a de Polignac number, because 56155445 - 2⁸ = 56155189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136760 + ... + 137169.

It is an arithmetic number, because the mean of its divisors is an integer number (8628795).

Almost surely, 2^56155445 is an apocalyptic number.

It is an amenable number.

56155445 is a deficient number, since it is larger than the sum of its proper divisors (12874915).

56155445 is a wasteful number, since it uses less digits than its factorization.

56155445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273975.

The product of its digits is 60000, while the sum is 35.

The square root of 56155445 is about 7493.6936820236. The cubic root of 56155445 is about 382.9399042660.

The spelling of 56155445 in words is "fifty-six million, one hundred fifty-five thousand, four hundred forty-five".