22513951 has 2 divisors, whose sum is σ = 22513952. Its totient is φ = 22513950.

The previous prime is 22513919. The next prime is 22514021. The reversal of 22513951 is 15931522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22513951 - 2⁵ = 22513919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22513901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11256975 + 11256976.

It is an arithmetic number, because the mean of its divisors is an integer number (11256976).

Almost surely, 2^22513951 is an apocalyptic number.

22513951 is a deficient number, since it is larger than the sum of its proper divisors (1).

22513951 is an equidigital number, since it uses as much as digits as its factorization.

22513951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 22513951 is about 4744.8868268906. The cubic root of 22513951 is about 282.3691450251.

The spelling of 22513951 in words is "twenty-two million, five hundred thirteen thousand, nine hundred fifty-one".