56171745 has 32 divisors (see below), whose sum is σ = 114128640. Its totient is φ = 25678080.

The previous prime is 56171743. The next prime is 56171747. The reversal of 56171745 is 54717165.

56171745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56171743) and next prime (56171747).

It is not a de Polignac number, because 56171745 - 2¹ = 56171743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56171741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28776 + ... + 30665.

It is an arithmetic number, because the mean of its divisors is an integer number (3566520).

Almost surely, 2^56171745 is an apocalyptic number.

It is an amenable number.

56171745 is an abundant number, since it is smaller than the sum of its proper divisors (57956895).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56171745 is a wasteful number, since it uses less digits than its factorization.

56171745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59462 (or 59456 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 56171745 is about 7494.7811842642. The cubic root of 56171745 is about 382.9769521224.

The spelling of 56171745 in words is "fifty-six million, one hundred seventy-one thousand, seven hundred forty-five".