15120075 has 18 divisors (see below), whose sum is σ = 25054324. Its totient is φ = 8046080.

The previous prime is 15120071. The next prime is 15120101. The reversal of 15120075 is 57002151.

It is not a de Polignac number, because 15120075 - 2² = 15120071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15120071) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33451 + ... + 33899.

Almost surely, 2^15120075 is an apocalyptic number.

15120075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15120075 is a deficient number, since it is larger than the sum of its proper divisors (9934249).

15120075 is an frugal number, since it uses more digits than its factorization.

15120075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 15120075 is about 3888.4540629921. The cubic root of 15120075 is about 247.2775268455.

The spelling of 15120075 in words is "fifteen million, one hundred twenty thousand, seventy-five".