15275121 has 4 divisors (see below), whose sum is σ = 20366832. Its totient is φ = 10183412.

The previous prime is 15275119. The next prime is 15275123. The reversal of 15275121 is 12157251.

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.

It is an interprime number because it is at equal distance from previous prime (15275119) and next prime (15275123).

It is a cyclic number.

It is not a de Polignac number, because 15275121 - 2¹ = 15275119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15275091 and 15275100.

It is not an unprimeable number, because it can be changed into a prime (15275123) 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 3 ways as a sum of consecutive naturals, for example, 2545851 + ... + 2545856.

It is an arithmetic number, because the mean of its divisors is an integer number (5091708).

Almost surely, 2^15275121 is an apocalyptic number.

It is an amenable number.

15275121 is a deficient number, since it is larger than the sum of its proper divisors (5091711).

15275121 is an equidigital number, since it uses as much as digits as its factorization.

15275121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5091710.

The product of its digits is 700, while the sum is 24.

The square root of 15275121 is about 3908.3399289212. The cubic root of 15275121 is about 248.1198746263.

The spelling of 15275121 in words is "fifteen million, two hundred seventy-five thousand, one hundred twenty-one".