22452531 has 16 divisors (see below), whose sum is σ = 31476480. Its totient is φ = 14208480.

The previous prime is 22452527. The next prime is 22452533. The reversal of 22452531 is 13525422.

It is not a de Polignac number, because 22452531 - 2² = 22452527 is a prime.

It is a super-2 number, since 2×22452531² = 1008232296611922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22452533) 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 15 ways as a sum of consecutive naturals, for example, 8421 + ... + 10761.

It is an arithmetic number, because the mean of its divisors is an integer number (1967280).

Almost surely, 2^22452531 is an apocalyptic number.

22452531 is a deficient number, since it is larger than the sum of its proper divisors (9023949).

22452531 is a wasteful number, since it uses less digits than its factorization.

22452531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506.

The product of its digits is 2400, while the sum is 24.

The square root of 22452531 is about 4738.4101764199. The cubic root of 22452531 is about 282.1121353750.

Adding to 22452531 its reverse (13525422), we get a palindrome (35977953).

The spelling of 22452531 in words is "twenty-two million, four hundred fifty-two thousand, five hundred thirty-one".