45081756 has 72 divisors (see below), whose sum is σ = 127043280. Its totient is φ = 13395456.

The previous prime is 45081749. The next prime is 45081763. The reversal of 45081756 is 65718054.

It is an interprime number because it is at equal distance from previous prime (45081749) and next prime (45081763).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 45081756.

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, 9690 + ... + 13566.

It is an arithmetic number, because the mean of its divisors is an integer number (1764490).

Almost surely, 2^45081756 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 45081756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63521640).

45081756 is an abundant number, since it is smaller than the sum of its proper divisors (81961524).

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

45081756 is a wasteful number, since it uses less digits than its factorization.

45081756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923 (or 3918 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 45081756 is about 6714.2948996898. The cubic root of 45081756 is about 355.9046055895.

The spelling of 45081756 in words is "forty-five million, eighty-one thousand, seven hundred fifty-six".