22056751 has 4 divisors (see below), whose sum is σ = 22068904. Its totient is φ = 22044600.

The previous prime is 22056743. The next prime is 22056757. The reversal of 22056751 is 15765022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22056751 - 2³ = 22056743 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 (22056757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2745 + ... + 7186.

It is an arithmetic number, because the mean of its divisors is an integer number (5517226).

Almost surely, 2^22056751 is an apocalyptic number.

22056751 is a deficient number, since it is larger than the sum of its proper divisors (12153).

22056751 is an equidigital number, since it uses as much as digits as its factorization.

22056751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12152.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 22056751 is about 4696.4615403514. The cubic root of 22056751 is about 280.4446633616. Note that the first 3 decimals are identical.

The spelling of 22056751 in words is "twenty-two million, fifty-six thousand, seven hundred fifty-one".