22502551 has 2 divisors, whose sum is σ = 22502552. Its totient is φ = 22502550.

The previous prime is 22502531. The next prime is 22502561. The reversal of 22502551 is 15520522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22502551 - 2¹³ = 22494359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22502531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11251275 + 11251276.

It is an arithmetic number, because the mean of its divisors is an integer number (11251276).

Almost surely, 2^22502551 is an apocalyptic number.

22502551 is a deficient number, since it is larger than the sum of its proper divisors (1).

22502551 is an equidigital number, since it uses as much as digits as its factorization.

22502551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 22502551 is about 4743.6853816416. The cubic root of 22502551 is about 282.3214775185.

The spelling of 22502551 in words is "twenty-two million, five hundred two thousand, five hundred fifty-one".