45475621 has 2 divisors, whose sum is σ = 45475622. Its totient is φ = 45475620.

The previous prime is 45475597. The next prime is 45475631. The reversal of 45475621 is 12657454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42185025 + 3290596 = 6495^2 + 1814^2 .

It is a cyclic number.

It is not a de Polignac number, because 45475621 - 2⁵ = 45475589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45475631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22737810 + 22737811.

It is an arithmetic number, because the mean of its divisors is an integer number (22737811).

Almost surely, 2^45475621 is an apocalyptic number.

It is an amenable number.

45475621 is a deficient number, since it is larger than the sum of its proper divisors (1).

45475621 is an equidigital number, since it uses as much as digits as its factorization.

45475621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 34.

The square root of 45475621 is about 6743.5614477811. The cubic root of 45475621 is about 356.9380769132.

The spelling of 45475621 in words is "forty-five million, four hundred seventy-five thousand, six hundred twenty-one".