15298661 has 4 divisors (see below), whose sum is σ = 17484192. Its totient is φ = 13113132.

The previous prime is 15298651. The next prime is 15298687. The reversal of 15298661 is 16689251.

15298661 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: 16689251 = 337 ⋅49523.

It is a cyclic number.

It is not a de Polignac number, because 15298661 - 2⁶ = 15298597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15298601) 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, 1092755 + ... + 1092768.

It is an arithmetic number, because the mean of its divisors is an integer number (4371048).

Almost surely, 2^15298661 is an apocalyptic number.

It is an amenable number.

15298661 is a deficient number, since it is larger than the sum of its proper divisors (2185531).

15298661 is an equidigital number, since it uses as much as digits as its factorization.

15298661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185530.

The product of its digits is 25920, while the sum is 38.

The square root of 15298661 is about 3911.3502783566. The cubic root of 15298661 is about 248.2472657413.

The spelling of 15298661 in words is "fifteen million, two hundred ninety-eight thousand, six hundred sixty-one".