44102561 has 4 divisors (see below), whose sum is σ = 44116224. Its totient is φ = 44088900.

The previous prime is 44102521. The next prime is 44102567. The reversal of 44102561 is 16520144.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44102561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44102567) 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, 1016 + ... + 9446.

It is an arithmetic number, because the mean of its divisors is an integer number (11029056).

Almost surely, 2^44102561 is an apocalyptic number.

It is an amenable number.

44102561 is a deficient number, since it is larger than the sum of its proper divisors (13663).

44102561 is an equidigital number, since it uses as much as digits as its factorization.

44102561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13662.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 44102561 is about 6640.9759071992. The cubic root of 44102561 is about 353.3089207254.

The spelling of 44102561 in words is "forty-four million, one hundred two thousand, five hundred sixty-one".