15119997 has 4 divisors (see below), whose sum is σ = 20160000. Its totient is φ = 10079996.

The previous prime is 15119977. The next prime is 15120011. The reversal of 15119997 is 79991151.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 15119997 - 2¹⁰ = 15118973 is a prime.

It is a super-2 number, since 2×15119997² = 457228618560018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15119917) 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, 2519997 + ... + 2520002.

It is an arithmetic number, because the mean of its divisors is an integer number (5040000).

Almost surely, 2^15119997 is an apocalyptic number.

It is an amenable number.

15119997 is a deficient number, since it is larger than the sum of its proper divisors (5040003).

15119997 is an equidigital number, since it uses as much as digits as its factorization.

15119997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040002.

The product of its digits is 25515, while the sum is 42.

The square root of 15119997 is about 3888.4440332863. Note that the first 3 decimals coincide. The cubic root of 15119997 is about 247.2771016342.

The spelling of 15119997 in words is "fifteen million, one hundred nineteen thousand, nine hundred ninety-seven".