44136561 has 8 divisors (see below), whose sum is σ = 67255744. Its totient is φ = 25220880.

The previous prime is 44136551. The next prime is 44136569. The reversal of 44136561 is 16563144.

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

It is not a de Polignac number, because 44136561 - 2¹¹ = 44134513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44136569) 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, 1050850 + ... + 1050891.

It is an arithmetic number, because the mean of its divisors is an integer number (8406968).

Almost surely, 2^44136561 is an apocalyptic number.

It is an amenable number.

44136561 is a deficient number, since it is larger than the sum of its proper divisors (23119183).

44136561 is a wasteful number, since it uses less digits than its factorization.

44136561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101751.

The product of its digits is 8640, while the sum is 30.

The square root of 44136561 is about 6643.5352787503. The cubic root of 44136561 is about 353.3996895864.

The spelling of 44136561 in words is "forty-four million, one hundred thirty-six thousand, five hundred sixty-one".