45432540 has 72 divisors (see below), whose sum is σ = 139518288. Its totient is φ = 11965440.

The previous prime is 45432539. The next prime is 45432571. The reversal of 45432540 is 4523454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13420 + ... + 16460.

It is an arithmetic number, because the mean of its divisors is an integer number (1937754).

Almost surely, 2^45432540 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 45432540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69759144).

45432540 is an abundant number, since it is smaller than the sum of its proper divisors (94085748).

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

45432540 is a wasteful number, since it uses less digits than its factorization.

45432540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139 (or 3134 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 45432540 is about 6740.3664588804. The cubic root of 45432540 is about 356.8253270679.

Adding to 45432540 its reverse (4523454), we get a palindrome (49955994).

The spelling of 45432540 in words is "forty-five million, four hundred thirty-two thousand, five hundred forty".