15121082 has 4 divisors (see below), whose sum is σ = 22681626. Its totient is φ = 7560540.

The previous prime is 15121081. The next prime is 15121091. The reversal of 15121082 is 28012151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28012151 = 439 ⋅63809.

It can be written as a sum of positive squares in only one way, i.e., 14737921 + 383161 = 3839^2 + 619^2 .

It is not an unprimeable number, because it can be changed into a prime (15121081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3780269 + ... + 3780272.

Almost surely, 2^15121082 is an apocalyptic number.

15121082 is a deficient number, since it is larger than the sum of its proper divisors (7560544).

15121082 is an equidigital number, since it uses as much as digits as its factorization.

15121082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560543.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 15121082 is about 3888.5835467430. The cubic root of 15121082 is about 247.2830163011.

The spelling of 15121082 in words is "fifteen million, one hundred twenty-one thousand, eighty-two".