23151522 has 16 divisors (see below), whose sum is σ = 46861920. Its totient is φ = 7624032.

The previous prime is 23151521. The next prime is 23151533. The reversal of 23151522 is 22515132.

It is not an unprimeable number, because it can be changed into a prime (23151521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22747 + ... + 23742.

It is an arithmetic number, because the mean of its divisors is an integer number (2928870).

Almost surely, 2^23151522 is an apocalyptic number.

23151522 is an abundant number, since it is smaller than the sum of its proper divisors (23710398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23151522 is a wasteful number, since it uses less digits than its factorization.

23151522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46577.

The product of its digits is 600, while the sum is 21.

The square root of 23151522 is about 4811.6028514415. The cubic root of 23151522 is about 285.0098365334.

Adding to 23151522 its reverse (22515132), we get a palindrome (45666654).

The spelling of 23151522 in words is "twenty-three million, one hundred fifty-one thousand, five hundred twenty-two".