45864621 has 24 divisors (see below), whose sum is σ = 73816704. Its totient is φ = 27202560.

The previous prime is 45864601. The next prime is 45864629. The reversal of 45864621 is 12646854.

45864621 is a `hidden beast` number, since 4 + 5 + 8 + 646 + 2 + 1 = 666.

It is not a de Polignac number, because 45864621 - 2¹⁸ = 45602477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45864629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (3075696).

Almost surely, 2^45864621 is an apocalyptic number.

It is an amenable number.

45864621 is a deficient number, since it is larger than the sum of its proper divisors (27952083).

45864621 is a wasteful number, since it uses less digits than its factorization.

45864621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9921 (or 9918 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 45864621 is about 6772.3423569693. The cubic root of 45864621 is about 357.9529421205.

The spelling of 45864621 in words is "forty-five million, eight hundred sixty-four thousand, six hundred twenty-one".