45518320 has 20 divisors (see below), whose sum is σ = 105830280. Its totient is φ = 18207296.

The previous prime is 45518303. The next prime is 45518327. The reversal of 45518320 is 2381554.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45518327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284410 + ... + 284569.

It is an arithmetic number, because the mean of its divisors is an integer number (5291514).

Almost surely, 2^45518320 is an apocalyptic number.

45518320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45518320 is an abundant number, since it is smaller than the sum of its proper divisors (60311960).

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

45518320 is a wasteful number, since it uses less digits than its factorization.

45518320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568992 (or 568986 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 45518320 is about 6746.7266136994. The cubic root of 45518320 is about 357.0497567612.

Adding to 45518320 its reverse (2381554), we get a palindrome (47899874).

The spelling of 45518320 in words is "forty-five million, five hundred eighteen thousand, three hundred twenty".