45815544 has 80 divisors (see below), whose sum is σ = 135907200. Its totient is φ = 14370048.

The previous prime is 45815543. The next prime is 45815557. The reversal of 45815544 is 44551854.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 45815499 and 45815508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45815543) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8937 + ... + 13095.

It is an arithmetic number, because the mean of its divisors is an integer number (1698840).

Almost surely, 2^45815544 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 45815544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67953600).

45815544 is an abundant number, since it is smaller than the sum of its proper divisors (90091656).

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

45815544 is a wasteful number, since it uses less digits than its factorization.

45815544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194 (or 4181 counting only the distinct ones).

The product of its digits is 64000, while the sum is 36.

The square root of 45815544 is about 6768.7180470160. The cubic root of 45815544 is about 357.8252218445.

The spelling of 45815544 in words is "forty-five million, eight hundred fifteen thousand, five hundred forty-four".