15444961 has 8 divisors (see below), whose sum is σ = 17951040. Its totient is φ = 13013808.

The previous prime is 15444943. The next prime is 15444991. The reversal of 15444961 is 16944451.

It is a happy number.

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 15444961 - 2¹³ = 15436769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15444931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18286 + ... + 19111.

It is an arithmetic number, because the mean of its divisors is an integer number (2243880).

Almost surely, 2^15444961 is an apocalyptic number.

It is an amenable number.

15444961 is a deficient number, since it is larger than the sum of its proper divisors (2506079).

15444961 is an equidigital number, since it uses as much as digits as its factorization.

15444961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37463.

The product of its digits is 17280, while the sum is 34.

The square root of 15444961 is about 3930.0077608066. The cubic root of 15444961 is about 249.0360802112.

The spelling of 15444961 in words is "fifteen million, four hundred forty-four thousand, nine hundred sixty-one".