15055231 has 4 divisors (see below), whose sum is σ = 15115464. Its totient is φ = 14995000.

The previous prime is 15055213. The next prime is 15055237. The reversal of 15055231 is 13255051.

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 15055231 - 2¹⁵ = 15022463 is a prime.

It is a super-2 number, since 2×15055231² = 453319960926722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15055237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29740 + ... + 30241.

It is an arithmetic number, because the mean of its divisors is an integer number (3778866).

Almost surely, 2^15055231 is an apocalyptic number.

15055231 is a deficient number, since it is larger than the sum of its proper divisors (60233).

15055231 is an equidigital number, since it uses as much as digits as its factorization.

15055231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60232.

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

The square root of 15055231 is about 3880.1070861511. The cubic root of 15055231 is about 246.9235285896.

The spelling of 15055231 in words is "fifteen million, fifty-five thousand, two hundred thirty-one".