45117644 has 24 divisors (see below), whose sum is σ = 92760528. Its totient is φ = 18930240.

The previous prime is 45117637. The next prime is 45117661. The reversal of 45117644 is 44671154.

It is a super-2 number, since 2×45117644² = 4071203600221472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45117644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38867 + ... + 40010.

It is an arithmetic number, because the mean of its divisors is an integer number (3865022).

Almost surely, 2^45117644 is an apocalyptic number.

45117644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

45117644 is an abundant number, since it is smaller than the sum of its proper divisors (47642884).

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

45117644 is a wasteful number, since it uses less digits than its factorization.

45117644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78905 (or 78903 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 45117644 is about 6716.9668750114. The cubic root of 45117644 is about 355.9990215855. Note that the first 3 decimals are identical.

Adding to 45117644 its reverse (44671154), we get a palindrome (89788798).

The spelling of 45117644 in words is "forty-five million, one hundred seventeen thousand, six hundred forty-four".