22542973 has 2 divisors, whose sum is σ = 22542974. Its totient is φ = 22542972.

The previous prime is 22542917. The next prime is 22542991. The reversal of 22542973 is 37924522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15155449 + 7387524 = 3893^2 + 2718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22542973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22542913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11271486 + 11271487.

It is an arithmetic number, because the mean of its divisors is an integer number (11271487).

Almost surely, 2^22542973 is an apocalyptic number.

It is an amenable number.

22542973 is a deficient number, since it is larger than the sum of its proper divisors (1).

22542973 is an equidigital number, since it uses as much as digits as its factorization.

22542973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 22542973 is about 4747.9440813893. The cubic root of 22542973 is about 282.4904238798.

The spelling of 22542973 in words is "twenty-two million, five hundred forty-two thousand, nine hundred seventy-three".