45421875 has 84 divisors (see below), whose sum is σ = 91405080. Its totient is φ = 21600000.

The previous prime is 45421853. The next prime is 45421877. The reversal of 45421875 is 57812454.

45421875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45421875 - 2⁵ = 45421843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45421877) 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 in 83 ways as a sum of consecutive naturals, for example, 2390616 + ... + 2390634.

Almost surely, 2^45421875 is an apocalyptic number.

45421875 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

45421875 is an abundant number, since it is smaller than the sum of its proper divisors (45983205).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45421875 is an equidigital number, since it uses as much as digits as its factorization.

45421875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 44 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 45421875 is about 6739.5752833543. The cubic root of 45421875 is about 356.7974040570.

The spelling of 45421875 in words is "forty-five million, four hundred twenty-one thousand, eight hundred seventy-five".