45500621 has 2 divisors, whose sum is σ = 45500622. Its totient is φ = 45500620.

The previous prime is 45500599. The next prime is 45500669. The reversal of 45500621 is 12600554.

45500621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43744996 + 1755625 = 6614^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 45500621 - 2¹⁸ = 45238477 is a prime.

It is a super-2 number, since 2×45500621² = 4140613022771282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45500821) 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 as a sum of consecutive naturals, namely, 22750310 + 22750311.

It is an arithmetic number, because the mean of its divisors is an integer number (22750311).

Almost surely, 2^45500621 is an apocalyptic number.

It is an amenable number.

45500621 is a deficient number, since it is larger than the sum of its proper divisors (1).

45500621 is an equidigital number, since it uses as much as digits as its factorization.

45500621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 45500621 is about 6745.4148130415. The cubic root of 45500621 is about 357.0034732509.

The spelling of 45500621 in words is "forty-five million, five hundred thousand, six hundred twenty-one".