44520521 has 2 divisors, whose sum is σ = 44520522. Its totient is φ = 44520520.

The previous prime is 44520499. The next prime is 44520527. The reversal of 44520521 is 12502544.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40500496 + 4020025 = 6364^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 44520521 - 2⁶ = 44520457 is a prime.

It is a super-2 number, since 2×44520521² = 3964153580222882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44520527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22260260 + 22260261.

It is an arithmetic number, because the mean of its divisors is an integer number (22260261).

Almost surely, 2^44520521 is an apocalyptic number.

It is an amenable number.

44520521 is a deficient number, since it is larger than the sum of its proper divisors (1).

44520521 is an equidigital number, since it uses as much as digits as its factorization.

44520521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 44520521 is about 6672.3699687592. The cubic root of 44520521 is about 354.4215163617.

The spelling of 44520521 in words is "forty-four million, five hundred twenty thousand, five hundred twenty-one".