15113387 has 4 divisors (see below), whose sum is σ = 15295560. Its totient is φ = 14931216.

The previous prime is 15113377. The next prime is 15113389. The reversal of 15113387 is 78331151.

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

It is a cyclic number.

It is not a de Polignac number, because 15113387 - 2¹² = 15109291 is a prime.

It is a super-2 number, since 2×15113387² = 456828933223538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15113389) 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, 90962 + ... + 91127.

It is an arithmetic number, because the mean of its divisors is an integer number (3823890).

Almost surely, 2^15113387 is an apocalyptic number.

15113387 is a deficient number, since it is larger than the sum of its proper divisors (182173).

15113387 is an equidigital number, since it uses as much as digits as its factorization.

15113387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182172.

The product of its digits is 2520, while the sum is 29.

The square root of 15113387 is about 3887.5939860021. The cubic root of 15113387 is about 247.2410623880.

The spelling of 15113387 in words is "fifteen million, one hundred thirteen thousand, three hundred eighty-seven".