45215532 has 36 divisors (see below), whose sum is σ = 116956840. Its totient is φ = 14720832.

The previous prime is 45215531. The next prime is 45215549. The reversal of 45215532 is 23551254.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 45215496 and 45215505.

It is not an unprimeable number, because it can be changed into a prime (45215531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13057 + ... + 16152.

Almost surely, 2^45215532 is an apocalyptic number.

It is an amenable number.

45215532 is an abundant number, since it is smaller than the sum of its proper divisors (71741308).

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

45215532 is a wasteful number, since it uses less digits than its factorization.

45215532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29262 (or 29257 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 45215532 is about 6724.2495492062. The cubic root of 45215532 is about 356.2562961029.

Adding to 45215532 its reverse (23551254), we get a palindrome (68766786).

The spelling of 45215532 in words is "forty-five million, two hundred fifteen thousand, five hundred thirty-two".