45278532 has 36 divisors (see below), whose sum is σ = 123259500. Its totient is φ = 13931712.

The previous prime is 45278521. The next prime is 45278537. The reversal of 45278532 is 23587254.

45278532 is a `hidden beast` number, since 4 + 52 + 78 + 532 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24265476 + 21013056 = 4926^2 + 4584^2 .

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

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

It is not an unprimeable number, because it can be changed into a prime (45278537) 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, 47907 + ... + 48842.

It is an arithmetic number, because the mean of its divisors is an integer number (3423875).

Almost surely, 2^45278532 is an apocalyptic number.

It is an amenable number.

45278532 is an abundant number, since it is smaller than the sum of its proper divisors (77980968).

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

45278532 is a wasteful number, since it uses less digits than its factorization.

45278532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96772 (or 96767 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 45278532 is about 6728.9324561924. The cubic root of 45278532 is about 356.4216797644.

The spelling of 45278532 in words is "forty-five million, two hundred seventy-eight thousand, five hundred thirty-two".