15255623 has 4 divisors (see below), whose sum is σ = 15266328. Its totient is φ = 15244920.

The previous prime is 15255587. The next prime is 15255629. The reversal of 15255623 is 32655251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 15255623 - 2¹⁰ = 15254599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15255629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2813 + ... + 6198.

It is an arithmetic number, because the mean of its divisors is an integer number (3816582).

Almost surely, 2^15255623 is an apocalyptic number.

15255623 is a deficient number, since it is larger than the sum of its proper divisors (10705).

15255623 is an equidigital number, since it uses as much as digits as its factorization.

15255623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10704.

The product of its digits is 9000, while the sum is 29.

The square root of 15255623 is about 3905.8447229761. The cubic root of 15255623 is about 248.0142584154.

The spelling of 15255623 in words is "fifteen million, two hundred fifty-five thousand, six hundred twenty-three".