22572947 has 2 divisors, whose sum is σ = 22572948. Its totient is φ = 22572946.

The previous prime is 22572943. The next prime is 22572961. The reversal of 22572947 is 74927522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22572947 - 2² = 22572943 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22572947.

It is not a weakly prime, because it can be changed into another prime (22572943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11286473 + 11286474.

It is an arithmetic number, because the mean of its divisors is an integer number (11286474).

Almost surely, 2^22572947 is an apocalyptic number.

22572947 is a deficient number, since it is larger than the sum of its proper divisors (1).

22572947 is an equidigital number, since it uses as much as digits as its factorization.

22572947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 22572947 is about 4751.0995569447. The cubic root of 22572947 is about 282.6155717902.

The spelling of 22572947 in words is "twenty-two million, five hundred seventy-two thousand, nine hundred forty-seven".