56400005 has 8 divisors (see below), whose sum is σ = 69863424. Its totient is φ = 43664400.

The previous prime is 56399989. The next prime is 56400007. The reversal of 56400005 is 50000465.

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

It is not a de Polignac number, because 56400005 - 2⁴ = 56399989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56400005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56400007) 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, 181781 + ... + 182090.

It is an arithmetic number, because the mean of its divisors is an integer number (8732928).

Almost surely, 2^56400005 is an apocalyptic number.

It is an amenable number.

56400005 is a deficient number, since it is larger than the sum of its proper divisors (13463419).

56400005 is a wasteful number, since it uses less digits than its factorization.

56400005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363907.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 56400005 is about 7509.9936750972. The cubic root of 56400005 is about 383.4950072075.

The spelling of 56400005 in words is "fifty-six million, four hundred thousand, five".