22088531 has 2 divisors, whose sum is σ = 22088532. Its totient is φ = 22088530.

The previous prime is 22088513. The next prime is 22088551. The reversal of 22088531 is 13588022.

Together with previous prime (22088513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22088531 is a prime.

It is a super-2 number, since 2×22088531² = 975806403475922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22088494 and 22088503.

It is not a weakly prime, because it can be changed into another prime (22088501) 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, 11044265 + 11044266.

It is an arithmetic number, because the mean of its divisors is an integer number (11044266).

Almost surely, 2^22088531 is an apocalyptic number.

22088531 is a deficient number, since it is larger than the sum of its proper divisors (1).

22088531 is an equidigital number, since it uses as much as digits as its factorization.

22088531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 22088531 is about 4699.8437208060. The cubic root of 22088531 is about 280.5792896316.

The spelling of 22088531 in words is "twenty-two million, eighty-eight thousand, five hundred thirty-one".