45643405 has 4 divisors (see below), whose sum is σ = 54772092. Its totient is φ = 36514720.

The previous prime is 45643399. The next prime is 45643421. The reversal of 45643405 is 50434654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35390601 + 10252804 = 5949^2 + 3202^2 .

It is not a de Polignac number, because 45643405 - 2³ = 45643397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4564336 + ... + 4564345.

It is an arithmetic number, because the mean of its divisors is an integer number (13693023).

Almost surely, 2^45643405 is an apocalyptic number.

It is an amenable number.

45643405 is a deficient number, since it is larger than the sum of its proper divisors (9128687).

45643405 is an equidigital number, since it uses as much as digits as its factorization.

45643405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9128686.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 45643405 is about 6755.9903049072. The cubic root of 45643405 is about 357.3765169239.

The spelling of 45643405 in words is "forty-five million, six hundred forty-three thousand, four hundred five".