22255947 has 36 divisors (see below), whose sum is σ = 37820640. Its totient is φ = 12573792.

The previous prime is 22255939. The next prime is 22255951. The reversal of 22255947 is 74955222.

It is a happy number.

It is not a de Polignac number, because 22255947 - 2³ = 22255939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22255967) 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 35 ways as a sum of consecutive naturals, for example, 47838 + ... + 48300.

Almost surely, 2^22255947 is an apocalyptic number.

22255947 is a deficient number, since it is larger than the sum of its proper divisors (15564693).

22255947 is a wasteful number, since it uses less digits than its factorization.

22255947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 582 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 22255947 is about 4717.6209046510. The cubic root of 22255947 is about 281.2863727774.

It can be divided in two parts, 222 and 55947, that added together give a square (56169 = 237²).

The spelling of 22255947 in words is "twenty-two million, two hundred fifty-five thousand, nine hundred forty-seven".