45632809 has 4 divisors (see below), whose sum is σ = 45717700. Its totient is φ = 45547920.

The previous prime is 45632791. The next prime is 45632843. The reversal of 45632809 is 90823654.

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 21160000 + 24472809 = 4600^2 + 4947^2 .

It is a cyclic number.

It is not a de Polignac number, because 45632809 - 2⁷ = 45632681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45632869) 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, 41634 + ... + 42715.

It is an arithmetic number, because the mean of its divisors is an integer number (11429425).

Almost surely, 2^45632809 is an apocalyptic number.

It is an amenable number.

45632809 is a deficient number, since it is larger than the sum of its proper divisors (84891).

45632809 is an equidigital number, since it uses as much as digits as its factorization.

45632809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84890.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 45632809 is about 6755.2060664350. The cubic root of 45632809 is about 357.3488601015.

The spelling of 45632809 in words is "forty-five million, six hundred thirty-two thousand, eight hundred nine".