15190897 has 4 divisors (see below), whose sum is σ = 15332976. Its totient is φ = 15048820.

The previous prime is 15190873. The next prime is 15190919. The reversal of 15190897 is 79809151.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79809151 = 3203 ⋅24917.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15190897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15190817) 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, 70879 + ... + 71092.

It is an arithmetic number, because the mean of its divisors is an integer number (3833244).

Almost surely, 2^15190897 is an apocalyptic number.

It is an amenable number.

15190897 is a deficient number, since it is larger than the sum of its proper divisors (142079).

15190897 is a wasteful number, since it uses less digits than its factorization.

15190897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142078.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 15190897 is about 3897.5501279650. The cubic root of 15190897 is about 247.6630059069.

The spelling of 15190897 in words is "fifteen million, one hundred ninety thousand, eight hundred ninety-seven".