15008121 has 12 divisors (see below), whose sum is σ = 22621248. Its totient is φ = 9570264.

The previous prime is 15008117. The next prime is 15008153. The reversal of 15008121 is 12180051.

It is not a de Polignac number, because 15008121 - 2² = 15008117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15008094 and 15008103.

It is not an unprimeable number, because it can be changed into a prime (15008111) 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 11 ways as a sum of consecutive naturals, for example, 36045 + ... + 36458.

It is an arithmetic number, because the mean of its divisors is an integer number (1885104).

Almost surely, 2^15008121 is an apocalyptic number.

It is an amenable number.

15008121 is a deficient number, since it is larger than the sum of its proper divisors (7613127).

15008121 is a wasteful number, since it uses less digits than its factorization.

15008121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72532 (or 72529 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 15008121 is about 3874.0316209344. The cubic root of 15008121 is about 246.6657063107.

Adding to 15008121 its reverse (12180051), we get a palindrome (27188172).

It can be divided in two parts, 15008 and 121, that added together give a square (15129 = 123²).

The spelling of 15008121 in words is "fifteen million, eight thousand, one hundred twenty-one".