44668521 has 12 divisors (see below), whose sum is σ = 64679940. Its totient is φ = 29705760.

The previous prime is 44668517. The next prime is 44668573. The reversal of 44668521 is 12586644.

44668521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 632025 + 44036496 = 795^2 + 6636^2 .

It is not a de Polignac number, because 44668521 - 2² = 44668517 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (44618521) 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 11 ways as a sum of consecutive naturals, for example, 2106 + ... + 9683.

It is an arithmetic number, because the mean of its divisors is an integer number (5389995).

Almost surely, 2^44668521 is an apocalyptic number.

It is an amenable number.

44668521 is a deficient number, since it is larger than the sum of its proper divisors (20011419).

44668521 is a wasteful number, since it uses less digits than its factorization.

44668521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12216 (or 12213 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 44668521 is about 6683.4512790923. The cubic root of 44668521 is about 354.8138176008.

The spelling of 44668521 in words is "forty-four million, six hundred sixty-eight thousand, five hundred twenty-one".