45451140 has 48 divisors (see below), whose sum is σ = 145444992. Its totient is φ = 10388736.

The previous prime is 45451127. The next prime is 45451163. The reversal of 45451140 is 4115454.

It is a happy number.

It is a super-2 number, since 2×45451140² = 4131612254599200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45451140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53689 + ... + 54528.

It is an arithmetic number, because the mean of its divisors is an integer number (3030104).

Almost surely, 2^45451140 is an apocalyptic number.

It is an amenable number.

45451140 is an abundant number, since it is smaller than the sum of its proper divisors (99993852).

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

45451140 is a wasteful number, since it uses less digits than its factorization.

45451140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108236 (or 108234 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 45451140 is about 6741.7460646334. The cubic root of 45451140 is about 356.8740149729.

Adding to 45451140 its reverse (4115454), we get a palindrome (49566594).

The spelling of 45451140 in words is "forty-five million, four hundred fifty-one thousand, one hundred forty".