22612537 has 2 divisors, whose sum is σ = 22612538. Its totient is φ = 22612536.

The previous prime is 22612531. The next prime is 22612589. The reversal of 22612537 is 73521622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22553001 + 59536 = 4749^2 + 244^2 .

It is a cyclic number.

It is not a de Polignac number, because 22612537 - 2¹⁵ = 22579769 is a prime.

It is a super-2 number, since 2×22612537² = 1022653659152738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22612531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11306268 + 11306269.

It is an arithmetic number, because the mean of its divisors is an integer number (11306269).

Almost surely, 2^22612537 is an apocalyptic number.

It is an amenable number.

22612537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22612537 is an equidigital number, since it uses as much as digits as its factorization.

22612537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 22612537 is about 4755.2641356711. The cubic root of 22612537 is about 282.7806988875.

The spelling of 22612537 in words is "twenty-two million, six hundred twelve thousand, five hundred thirty-seven".