45012540 has 24 divisors (see below), whose sum is σ = 126035280. Its totient is φ = 12003328.

The previous prime is 45012523. The next prime is 45012581. The reversal of 45012540 is 4521054.

It is a super-2 number, since 2×45012540² = 4052257514503200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375045 + ... + 375164.

It is an arithmetic number, because the mean of its divisors is an integer number (5251470).

Almost surely, 2^45012540 is an apocalyptic number.

It is an amenable number.

45012540 is an abundant number, since it is smaller than the sum of its proper divisors (81022740).

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

45012540 is a wasteful number, since it uses less digits than its factorization.

45012540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750221 (or 750219 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 45012540 is about 6709.1385438072. The cubic root of 45012540 is about 355.7223669672.

Adding to 45012540 its reverse (4521054), we get a palindrome (49533594).

The spelling of 45012540 in words is "forty-five million, twelve thousand, five hundred forty".