56220405 has 8 divisors (see below), whose sum is σ = 89952672. Its totient is φ = 29984208.

The previous prime is 56220371. The next prime is 56220419. The reversal of 56220405 is 50402265.

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

It is not a de Polignac number, because 56220405 - 2⁶ = 56220341 is a prime.

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, 1873999 + ... + 1874028.

It is an arithmetic number, because the mean of its divisors is an integer number (11244084).

Almost surely, 2^56220405 is an apocalyptic number.

It is an amenable number.

56220405 is a deficient number, since it is larger than the sum of its proper divisors (33732267).

56220405 is a wasteful number, since it uses less digits than its factorization.

56220405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748035.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 56220405 is about 7498.0267404164. The cubic root of 56220405 is about 383.0875075858.

The spelling of 56220405 in words is "fifty-six million, two hundred twenty thousand, four hundred five".