44164561 has 4 divisors (see below), whose sum is σ = 50473792. Its totient is φ = 37855332.

The previous prime is 44164541. The next prime is 44164567. The reversal of 44164561 is 16546144.

44164561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 44164561 - 2¹¹ = 44162513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44164567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3154605 + ... + 3154618.

It is an arithmetic number, because the mean of its divisors is an integer number (12618448).

Almost surely, 2^44164561 is an apocalyptic number.

It is an amenable number.

44164561 is a deficient number, since it is larger than the sum of its proper divisors (6309231).

44164561 is an equidigital number, since it uses as much as digits as its factorization.

44164561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6309230.

The product of its digits is 11520, while the sum is 31.

The square root of 44164561 is about 6645.6422563963. The cubic root of 44164561 is about 353.4744054179.

The spelling of 44164561 in words is "forty-four million, one hundred sixty-four thousand, five hundred sixty-one".