45321669 has 24 divisors (see below), whose sum is σ = 69582240. Its totient is φ = 28345248.

The previous prime is 45321649. The next prime is 45321671. The reversal of 45321669 is 96612354.

It is a happy number.

It is not a de Polignac number, because 45321669 - 2⁵ = 45321637 is a prime.

It is a super-2 number, since 2×45321669² = 4108107361891122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45321649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17059 + ... + 19535.

It is an arithmetic number, because the mean of its divisors is an integer number (2899260).

Almost surely, 2^45321669 is an apocalyptic number.

It is an amenable number.

45321669 is a deficient number, since it is larger than the sum of its proper divisors (24260571).

45321669 is a wasteful number, since it uses less digits than its factorization.

45321669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609 (or 2606 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 45321669 is about 6732.1370306909. The cubic root of 45321669 is about 356.5348318574.

It can be divided in two parts, 453 and 21669, that added together give a palindrome (22122).

The spelling of 45321669 in words is "forty-five million, three hundred twenty-one thousand, six hundred sixty-nine".