56221879 has 16 divisors (see below), whose sum is σ = 67035136. Its totient is φ = 46137600.

The previous prime is 56221877. The next prime is 56221883. The reversal of 56221879 is 97812265.

It is a cyclic number.

It is not a de Polignac number, because 56221879 - 2¹ = 56221877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56221877) 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, 19714 + ... + 22384.

It is an arithmetic number, because the mean of its divisors is an integer number (4189696).

Almost surely, 2^56221879 is an apocalyptic number.

56221879 is a deficient number, since it is larger than the sum of its proper divisors (10813257).

56221879 is a wasteful number, since it uses less digits than its factorization.

56221879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806.

The product of its digits is 60480, while the sum is 40.

The square root of 56221879 is about 7498.1250322997. The cubic root of 56221879 is about 383.0908555165.

The spelling of 56221879 in words is "fifty-six million, two hundred twenty-one thousand, eight hundred seventy-nine".