56400145 has 8 divisors (see below), whose sum is σ = 67876200. Its totient is φ = 44989440.

The previous prime is 56400137. The next prime is 56400167. The reversal of 56400145 is 54100465.

It can be written as a sum of positive squares in 4 ways, for example, as 7568001 + 48832144 = 2751^2 + 6988^2 .

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

It is not a de Polignac number, because 56400145 - 2³ = 56400137 is a prime.

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, 14416 + ... + 17905.

It is an arithmetic number, because the mean of its divisors is an integer number (8484525).

Almost surely, 2^56400145 is an apocalyptic number.

It is an amenable number.

56400145 is a deficient number, since it is larger than the sum of its proper divisors (11476055).

56400145 is a wasteful number, since it uses less digits than its factorization.

56400145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32675.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 56400145 is about 7510.0029960047. The cubic root of 56400145 is about 383.4953245199.

The spelling of 56400145 in words is "fifty-six million, four hundred thousand, one hundred forty-five".