56407161 has 4 divisors (see below), whose sum is σ = 75209552. Its totient is φ = 37604772.

The previous prime is 56407151. The next prime is 56407163. The reversal of 56407161 is 16170465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56407161 - 2¹⁰ = 56406137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56407163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9401191 + ... + 9401196.

It is an arithmetic number, because the mean of its divisors is an integer number (18802388).

Almost surely, 2^56407161 is an apocalyptic number.

It is an amenable number.

56407161 is a deficient number, since it is larger than the sum of its proper divisors (18802391).

56407161 is a wasteful number, since it uses less digits than its factorization.

56407161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18802390.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 56407161 is about 7510.4700918118. The cubic root of 56407161 is about 383.5112257298.

The spelling of 56407161 in words is "fifty-six million, four hundred seven thousand, one hundred sixty-one".