22552131 has 8 divisors (see below), whose sum is σ = 34365184. Its totient is φ = 12886920.

The previous prime is 22552093. The next prime is 22552157. The reversal of 22552131 is 13125522.

22552131 = 359² + 360² + ... + 484².

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

It is not a de Polignac number, because 22552131 - 2⁶ = 22552067 is a prime.

It is a super-2 number, since 2×22552131² = 1017197225282322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1073911 = 22552131 / (2 + 2 + 5 + 5 + 2 + 1 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 22552098 and 22552107.

It is not an unprimeable number, because it can be changed into a prime (22552171) 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 in 7 ways as a sum of consecutive naturals, for example, 536935 + ... + 536976.

It is an arithmetic number, because the mean of its divisors is an integer number (4295648).

Almost surely, 2^22552131 is an apocalyptic number.

22552131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22552131 is a deficient number, since it is larger than the sum of its proper divisors (11813053).

22552131 is a wasteful number, since it uses less digits than its factorization.

22552131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073921.

The product of its digits is 600, while the sum is 21.

The square root of 22552131 is about 4748.9084008854. The cubic root of 22552131 is about 282.5286722667.

Adding to 22552131 its reverse (13125522), we get a palindrome (35677653).

The spelling of 22552131 in words is "twenty-two million, five hundred fifty-two thousand, one hundred thirty-one".