45644520 has 64 divisors (see below), whose sum is σ = 139864320. Its totient is φ = 11911424.

The previous prime is 45644519. The next prime is 45644527. The reversal of 45644520 is 2544654.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (45644527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1594 + ... + 9686.

It is an arithmetic number, because the mean of its divisors is an integer number (2185380).

Almost surely, 2^45644520 is an apocalyptic number.

45644520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45644520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69932160).

45644520 is an abundant number, since it is smaller than the sum of its proper divisors (94219800).

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

45644520 is a wasteful number, since it uses less digits than its factorization.

45644520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8154 (or 8150 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 45644520 is about 6756.0728237638. The cubic root of 45644520 is about 357.3794269579.

It can be divided in two parts, 45644 and 520, that added together give a palindrome (46164).

The spelling of 45644520 in words is "forty-five million, six hundred forty-four thousand, five hundred twenty".