15244561 has 8 divisors (see below), whose sum is σ = 15951744. Its totient is φ = 14541120.

The previous prime is 15244519. The next prime is 15244573. The reversal of 15244561 is 16544251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15244561 - 2⁷ = 15244433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15244501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10521 + ... + 11881.

It is an arithmetic number, because the mean of its divisors is an integer number (1993968).

Almost surely, 2^15244561 is an apocalyptic number.

It is an amenable number.

15244561 is a deficient number, since it is larger than the sum of its proper divisors (707183).

15244561 is a wasteful number, since it uses less digits than its factorization.

15244561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871.

The product of its digits is 4800, while the sum is 28.

The square root of 15244561 is about 3904.4283832592. The cubic root of 15244561 is about 247.9542980734.

The spelling of 15244561 in words is "fifteen million, two hundred forty-four thousand, five hundred sixty-one".