45400621 has 4 divisors (see below), whose sum is σ = 51886432. Its totient is φ = 38914812.

The previous prime is 45400613. The next prime is 45400627. The reversal of 45400621 is 12600454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45400621 - 2³ = 45400613 is a prime.

It is a super-2 number, since 2×45400621² = 4122432774371282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45400592 and 45400601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45400627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3242895 + ... + 3242908.

It is an arithmetic number, because the mean of its divisors is an integer number (12971608).

Almost surely, 2^45400621 is an apocalyptic number.

It is an amenable number.

45400621 is a deficient number, since it is larger than the sum of its proper divisors (6485811).

45400621 is an equidigital number, since it uses as much as digits as its factorization.

45400621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485810.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 45400621 is about 6737.9982932619. The cubic root of 45400621 is about 356.7417439803.

The spelling of 45400621 in words is "forty-five million, four hundred thousand, six hundred twenty-one".