23422551 has 4 divisors (see below), whose sum is σ = 31230072. Its totient is φ = 15615032.

The previous prime is 23422547. The next prime is 23422559. The reversal of 23422551 is 15522432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23422551 - 2² = 23422547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23422559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3903756 + ... + 3903761.

It is an arithmetic number, because the mean of its divisors is an integer number (7807518).

Almost surely, 2^23422551 is an apocalyptic number.

23422551 is a deficient number, since it is larger than the sum of its proper divisors (7807521).

23422551 is an equidigital number, since it uses as much as digits as its factorization.

23422551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7807520.

The product of its digits is 2400, while the sum is 24.

The square root of 23422551 is about 4839.6850104113. The cubic root of 23422551 is about 286.1177038464.

Adding to 23422551 its reverse (15522432), we get a palindrome (38944983).

The spelling of 23422551 in words is "twenty-three million, four hundred twenty-two thousand, five hundred fifty-one".