22570531 has 2 divisors, whose sum is σ = 22570532. Its totient is φ = 22570530.

The previous prime is 22570529. The next prime is 22570579. The reversal of 22570531 is 13507522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22570531 - 2¹ = 22570529 is a prime.

It is a super-2 number, since 2×22570531² = 1018857739243922, which contains 22 as substring.

Together with 22570529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22570496 and 22570505.

It is not a weakly prime, because it can be changed into another prime (22570501) 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, 11285265 + 11285266.

It is an arithmetic number, because the mean of its divisors is an integer number (11285266).

Almost surely, 2^22570531 is an apocalyptic number.

22570531 is a deficient number, since it is larger than the sum of its proper divisors (1).

22570531 is an equidigital number, since it uses as much as digits as its factorization.

22570531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 22570531 is about 4750.8452932084. The cubic root of 22570531 is about 282.6054885759.

It can be divided in two parts, 225 and 70531, that added together give a square (70756 = 266²).

The spelling of 22570531 in words is "twenty-two million, five hundred seventy thousand, five hundred thirty-one".