22550531 has 4 divisors (see below), whose sum is σ = 22631064. Its totient is φ = 22470000.

The previous prime is 22550527. The next prime is 22550537. The reversal of 22550531 is 13505522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22550531 - 2² = 22550527 is a prime.

It is a super-2 number, since 2×22550531² = 1017052896763922, 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 = 22550497 and 22550506.

It is not an unprimeable number, because it can be changed into a prime (22550537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39845 + ... + 40406.

It is an arithmetic number, because the mean of its divisors is an integer number (5657766).

Almost surely, 2^22550531 is an apocalyptic number.

22550531 is a deficient number, since it is larger than the sum of its proper divisors (80533).

22550531 is an equidigital number, since it uses as much as digits as its factorization.

22550531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80532.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 22550531 is about 4748.7399381310. The cubic root of 22550531 is about 282.5219906133.

The spelling of 22550531 in words is "twenty-two million, five hundred fifty thousand, five hundred thirty-one".