45512040 has 64 divisors (see below), whose sum is σ = 156044160. Its totient is φ = 10402560.

The previous prime is 45512023. The next prime is 45512057. The reversal of 45512040 is 4021554.

It is an interprime number because it is at equal distance from previous prime (45512023) and next prime (45512057).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 45511998 and 45512016.

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, 26251 + ... + 27930.

It is an arithmetic number, because the mean of its divisors is an integer number (2438190).

Almost surely, 2^45512040 is an apocalyptic number.

45512040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45512040 is an abundant number, since it is smaller than the sum of its proper divisors (110532120).

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

45512040 is a wasteful number, since it uses less digits than its factorization.

45512040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54202 (or 54198 counting only the distinct ones).

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

The square root of 45512040 is about 6746.2611867612. The cubic root of 45512040 is about 357.0333357128.

Adding to 45512040 its reverse (4021554), we get a palindrome (49533594).

The spelling of 45512040 in words is "forty-five million, five hundred twelve thousand, forty".