45056621 has 2 divisors, whose sum is σ = 45056622. Its totient is φ = 45056620.

The previous prime is 45056617. The next prime is 45056651. The reversal of 45056621 is 12665054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 354025 = 6686^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 45056621 - 2² = 45056617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45056651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22528310 + 22528311.

It is an arithmetic number, because the mean of its divisors is an integer number (22528311).

Almost surely, 2^45056621 is an apocalyptic number.

It is an amenable number.

45056621 is a deficient number, since it is larger than the sum of its proper divisors (1).

45056621 is an equidigital number, since it uses as much as digits as its factorization.

45056621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 45056621 is about 6712.4228859630. The cubic root of 45056621 is about 355.8384492985.

The spelling of 45056621 in words is "forty-five million, fifty-six thousand, six hundred twenty-one".