44345561 has 4 divisors (see below), whose sum is σ = 47756772. Its totient is φ = 40934352.

The previous prime is 44345551. The next prime is 44345569. The reversal of 44345561 is 16554344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29376400 + 14969161 = 5420^2 + 3869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44345561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44345569) 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, 1705586 + ... + 1705611.

It is an arithmetic number, because the mean of its divisors is an integer number (11939193).

Almost surely, 2^44345561 is an apocalyptic number.

It is an amenable number.

44345561 is a deficient number, since it is larger than the sum of its proper divisors (3411211).

44345561 is a wasteful number, since it uses less digits than its factorization.

44345561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411210.

The product of its digits is 28800, while the sum is 32.

The square root of 44345561 is about 6659.2462786715. The cubic root of 44345561 is about 353.9566296468.

The spelling of 44345561 in words is "forty-four million, three hundred forty-five thousand, five hundred sixty-one".