45665532 has 72 divisors (see below), whose sum is σ = 130620672. Its totient is φ = 13834800.

The previous prime is 45665507. The next prime is 45665539. The reversal of 45665532 is 23556654.

It is a happy number.

45665532 is a `hidden beast` number, since 45 + 66 + 553 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45665539) 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, 8557 + ... + 12827.

It is an arithmetic number, because the mean of its divisors is an integer number (1814176).

Almost surely, 2^45665532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45665532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65310336).

45665532 is an abundant number, since it is smaller than the sum of its proper divisors (84955140).

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

45665532 is a wasteful number, since it uses less digits than its factorization.

45665532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4301 (or 4287 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 45665532 is about 6757.6276902475. The cubic root of 45665532 is about 357.4342572313.

The spelling of 45665532 in words is "forty-five million, six hundred sixty-five thousand, five hundred thirty-two".