45505240 has 32 divisors (see below), whose sum is σ = 111695760. Its totient is φ = 16547200.

The previous prime is 45505237. The next prime is 45505279. The reversal of 45505240 is 4250554.

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, 51271 + ... + 52150.

Almost surely, 2^45505240 is an apocalyptic number.

45505240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45505240 is an abundant number, since it is smaller than the sum of its proper divisors (66190520).

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

45505240 is a wasteful number, since it uses less digits than its factorization.

45505240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103443 (or 103439 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 45505240 is about 6745.7571850757. The cubic root of 45505240 is about 357.0155532564.

Adding to 45505240 its reverse (4250554), we get a palindrome (49755794).

The spelling of 45505240 in words is "forty-five million, five hundred five thousand, two hundred forty".