22523531 has 8 divisors (see below), whose sum is σ = 23753280. Its totient is φ = 21298248.

The previous prime is 22523519. The next prime is 22523533. The reversal of 22523531 is 13532522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22523531 - 2⁶ = 22523467 is a prime.

It is a super-2 number, since 2×22523531² = 1014618897415922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22523497 and 22523506.

It is not an unprimeable number, because it can be changed into a prime (22523533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16580 + ... + 17886.

It is an arithmetic number, because the mean of its divisors is an integer number (2969160).

Almost surely, 2^22523531 is an apocalyptic number.

22523531 is a deficient number, since it is larger than the sum of its proper divisors (1229749).

22523531 is a wasteful number, since it uses less digits than its factorization.

22523531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233.

The product of its digits is 1800, while the sum is 23.

The square root of 22523531 is about 4745.8962272684. The cubic root of 22523531 is about 282.4091900149.

The spelling of 22523531 in words is "twenty-two million, five hundred twenty-three thousand, five hundred thirty-one".