23151550 has 12 divisors (see below), whose sum is σ = 43061976. Its totient is φ = 9260600.

The previous prime is 23151539. The next prime is 23151559. The reversal of 23151550 is 5515132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23151559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 231466 + ... + 231565.

It is an arithmetic number, because the mean of its divisors is an integer number (3588498).

Almost surely, 2^23151550 is an apocalyptic number.

23151550 is a deficient number, since it is larger than the sum of its proper divisors (19910426).

23151550 is a wasteful number, since it uses less digits than its factorization.

23151550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463043 (or 463038 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 23151550 is about 4811.6057610739. The cubic root of 23151550 is about 285.0099514326.

Adding to 23151550 its reverse (5515132), we get a palindrome (28666682).

The spelling of 23151550 in words is "twenty-three million, one hundred fifty-one thousand, five hundred fifty".