56220771 has 4 divisors (see below), whose sum is σ = 74961032. Its totient is φ = 37480512.

The previous prime is 56220743. The next prime is 56220779. The reversal of 56220771 is 17702265.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 56220771 - 2⁷ = 56220643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56220779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9370126 + ... + 9370131.

It is an arithmetic number, because the mean of its divisors is an integer number (18740258).

Almost surely, 2^56220771 is an apocalyptic number.

56220771 is a deficient number, since it is larger than the sum of its proper divisors (18740261).

56220771 is a wasteful number, since it uses less digits than its factorization.

56220771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18740260.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 56220771 is about 7498.0511467981. The cubic root of 56220771 is about 383.0883388956.

The spelling of 56220771 in words is "fifty-six million, two hundred twenty thousand, seven hundred seventy-one".