56220406 has 16 divisors (see below), whose sum is σ = 93507408. Its totient is φ = 25135200.

The previous prime is 56220371. The next prime is 56220419. The reversal of 56220406 is 60402265.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19605 + ... + 22288.

It is an arithmetic number, because the mean of its divisors is an integer number (5844213).

Almost surely, 2^56220406 is an apocalyptic number.

56220406 is a deficient number, since it is larger than the sum of its proper divisors (37287002).

56220406 is a wasteful number, since it uses less digits than its factorization.

56220406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41967.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 56220406 is about 7498.0268071007. The cubic root of 56220406 is about 383.0875098572.

The spelling of 56220406 in words is "fifty-six million, two hundred twenty thousand, four hundred six".