56420005 has 16 divisors (see below), whose sum is σ = 69997824. Its totient is φ = 43623360.

The previous prime is 56420003. The next prime is 56420009. The reversal of 56420005 is 50002465.

It is not a de Polignac number, because 56420005 - 2¹ = 56420003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56420003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29220 + ... + 31090.

It is an arithmetic number, because the mean of its divisors is an integer number (4374864).

Almost surely, 2^56420005 is an apocalyptic number.

It is an amenable number.

56420005 is a deficient number, since it is larger than the sum of its proper divisors (13577819).

56420005 is a wasteful number, since it uses less digits than its factorization.

56420005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 56420005 is about 7511.3251161163. The cubic root of 56420005 is about 383.5403322254.

The spelling of 56420005 in words is "fifty-six million, four hundred twenty thousand, five".