15069121 has 4 divisors (see below), whose sum is σ = 15145812. Its totient is φ = 14992432.

The previous prime is 15069113. The next prime is 15069127. The reversal of 15069121 is 12196051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9120400 + 5948721 = 3020^2 + 2439^2 .

It is a cyclic number.

It is not a de Polignac number, because 15069121 - 2³ = 15069113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15069127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38050 + ... + 38443.

It is an arithmetic number, because the mean of its divisors is an integer number (3786453).

Almost surely, 2^15069121 is an apocalyptic number.

It is an amenable number.

15069121 is a deficient number, since it is larger than the sum of its proper divisors (76691).

15069121 is an equidigital number, since it uses as much as digits as its factorization.

15069121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76690.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 15069121 is about 3881.8965725532. The cubic root of 15069121 is about 246.9994427039. Note that the first 3 decimals are identical.

The spelling of 15069121 in words is "fifteen million, sixty-nine thousand, one hundred twenty-one".