45215744 has 104 divisors (see below), whose sum is σ = 110087040. Its totient is φ = 18137088.

The previous prime is 45215741. The next prime is 45215761. The reversal of 45215744 is 44751254.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 45215744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45215741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544727 + ... + 544809.

Almost surely, 2^45215744 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 45215744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55043520).

45215744 is an abundant number, since it is smaller than the sum of its proper divisors (64871296).

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

45215744 is an equidigital number, since it uses as much as digits as its factorization.

45215744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 111 counting only the distinct ones).

The product of its digits is 22400, while the sum is 32.

The square root of 45215744 is about 6724.2653130286. The cubic root of 45215744 is about 356.2568528896.

Adding to 45215744 its reverse (44751254), we get a palindrome (89966998).

The spelling of 45215744 in words is "forty-five million, two hundred fifteen thousand, seven hundred forty-four".