15244261 has 4 divisors (see below), whose sum is σ = 15335712. Its totient is φ = 15152812.

The previous prime is 15244253. The next prime is 15244267. The reversal of 15244261 is 16244251.

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: 16244251 = 389 ⋅41759.

It is a cyclic number.

It is not a de Polignac number, because 15244261 - 2³ = 15244253 is a prime.

It is a super-2 number, since 2×15244261² = 464774986872242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15244267) 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, 45475 + ... + 45808.

It is an arithmetic number, because the mean of its divisors is an integer number (3833928).

Almost surely, 2^15244261 is an apocalyptic number.

It is an amenable number.

15244261 is a deficient number, since it is larger than the sum of its proper divisors (91451).

15244261 is an equidigital number, since it uses as much as digits as its factorization.

15244261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91450.

The product of its digits is 1920, while the sum is 25.

The square root of 15244261 is about 3904.3899651546. The cubic root of 15244261 is about 247.9526715529.

The spelling of 15244261 in words is "fifteen million, two hundred forty-four thousand, two hundred sixty-one".