15244855 has 4 divisors (see below), whose sum is σ = 18293832. Its totient is φ = 12195880.

The previous prime is 15244843. The next prime is 15244861. The reversal of 15244855 is 55844251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55844251 = 3253 ⋅17167.

It is not a de Polignac number, because 15244855 - 2⁷ = 15244727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15244855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524481 + ... + 1524490.

It is an arithmetic number, because the mean of its divisors is an integer number (4573458).

Almost surely, 2^15244855 is an apocalyptic number.

15244855 is a deficient number, since it is larger than the sum of its proper divisors (3048977).

15244855 is an equidigital number, since it uses as much as digits as its factorization.

15244855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048976.

The product of its digits is 32000, while the sum is 34.

The square root of 15244855 is about 3904.4660326349. The cubic root of 15244855 is about 247.9558920429.

The spelling of 15244855 in words is "fifteen million, two hundred forty-four thousand, eight hundred fifty-five".