15133121 has 4 divisors (see below), whose sum is σ = 15212544. Its totient is φ = 15053700.

The previous prime is 15133093. The next prime is 15133123. The reversal of 15133121 is 12133151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12133151 = 37 ⋅327923.

It is a cyclic number.

It is not a de Polignac number, because 15133121 - 2¹⁴ = 15116737 is a prime.

It is a super-2 number, since 2×15133121² = 458022702401282, which contains 22 as substring.

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 15133121.

It is not an unprimeable number, because it can be changed into a prime (15133123) 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 3 ways as a sum of consecutive naturals, for example, 39425 + ... + 39806.

It is an arithmetic number, because the mean of its divisors is an integer number (3803136).

Almost surely, 2^15133121 is an apocalyptic number.

It is an amenable number.

15133121 is a deficient number, since it is larger than the sum of its proper divisors (79423).

15133121 is an equidigital number, since it uses as much as digits as its factorization.

15133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79422.

The product of its digits is 90, while the sum is 17.

The square root of 15133121 is about 3890.1312317196. The cubic root of 15133121 is about 247.3486255942.

Adding to 15133121 its reverse (12133151), we get a palindrome (27266272).

The spelling of 15133121 in words is "fifteen million, one hundred thirty-three thousand, one hundred twenty-one".