56400161 has 8 divisors (see below), whose sum is σ = 57003648. Its totient is φ = 55800000.

The previous prime is 56400137. The next prime is 56400167. The reversal of 56400161 is 16100465.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56400161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56400167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46361 + ... + 47561.

It is an arithmetic number, because the mean of its divisors is an integer number (7125456).

Almost surely, 2^56400161 is an apocalyptic number.

It is an amenable number.

56400161 is a deficient number, since it is larger than the sum of its proper divisors (603487).

56400161 is a wasteful number, since it uses less digits than its factorization.

56400161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 56400161 is about 7510.0040612506. The cubic root of 56400161 is about 383.4953607841.

The spelling of 56400161 in words is "fifty-six million, four hundred thousand, one hundred sixty-one".