44475821 has 8 divisors (see below), whose sum is σ = 49549080. Its totient is φ = 39638592.

The previous prime is 44475811. The next prime is 44475829. The reversal of 44475821 is 12857444.

It can be written as a sum of positive squares in 4 ways, for example, as 12145225 + 32330596 = 3485^2 + 5686^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-44475821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44475829) 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, 58610 + ... + 59363.

It is an arithmetic number, because the mean of its divisors is an integer number (6193635).

Almost surely, 2^44475821 is an apocalyptic number.

It is an amenable number.

44475821 is a deficient number, since it is larger than the sum of its proper divisors (5073259).

44475821 is a wasteful number, since it uses less digits than its factorization.

44475821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118015.

The product of its digits is 35840, while the sum is 35.

The square root of 44475821 is about 6669.0194931489. The cubic root of 44475821 is about 354.3028598669.

The spelling of 44475821 in words is "forty-four million, four hundred seventy-five thousand, eight hundred twenty-one".