45642532 has 24 divisors (see below), whose sum is σ = 86240000. Its totient is φ = 21011616.

The previous prime is 45642529. The next prime is 45642533. The reversal of 45642532 is 23524654.

It is a junction number, because it is equal to n+sod(n) for n = 45642494 and 45642503.

It is not an unprimeable number, because it can be changed into a prime (45642533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25069 + ... + 26827.

Almost surely, 2^45642532 is an apocalyptic number.

It is an amenable number.

45642532 is a deficient number, since it is larger than the sum of its proper divisors (40597468).

45642532 is a wasteful number, since it uses less digits than its factorization.

45642532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275 (or 2273 counting only the distinct ones).

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

The square root of 45642532 is about 6755.9256952693. The cubic root of 45642532 is about 357.3742384517.

The spelling of 45642532 in words is "forty-five million, six hundred forty-two thousand, five hundred thirty-two".