45640544 has 48 divisors (see below), whose sum is σ = 94303440. Its totient is φ = 21719040.

The previous prime is 45640477. The next prime is 45640559. The reversal of 45640544 is 44504654.

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 45640544.

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, 56012 + ... + 56820.

It is an arithmetic number, because the mean of its divisors is an integer number (1964655).

Almost surely, 2^45640544 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 45640544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47151720).

45640544 is an abundant number, since it is smaller than the sum of its proper divisors (48662896).

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

45640544 is a wasteful number, since it uses less digits than its factorization.

45640544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 45640544 is about 6755.7785635706. The cubic root of 45640544 is about 357.3690497949.

The spelling of 45640544 in words is "forty-five million, six hundred forty thousand, five hundred forty-four".