15049897 has 4 divisors (see below), whose sum is σ = 15305040. Its totient is φ = 14794756.

The previous prime is 15049883. The next prime is 15049939. The reversal of 15049897 is 79894051.

15049897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 79894051 = 113 ⋅707027.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15049897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15049807) 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, 127483 + ... + 127600.

It is an arithmetic number, because the mean of its divisors is an integer number (3826260).

Almost surely, 2^15049897 is an apocalyptic number.

It is an amenable number.

15049897 is a deficient number, since it is larger than the sum of its proper divisors (255143).

15049897 is an equidigital number, since it uses as much as digits as its factorization.

15049897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255142.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 15049897 is about 3879.4196730954. The cubic root of 15049897 is about 246.8943638499.

The spelling of 15049897 in words is "fifteen million, forty-nine thousand, eight hundred ninety-seven".