45017808 has 120 divisors (see below), whose sum is σ = 133783104. Its totient is φ = 13009920.

The previous prime is 45017761. The next prime is 45017809. The reversal of 45017808 is 80871054.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45017809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133416 + ... + 133752.

Almost surely, 2^45017808 is an apocalyptic number.

45017808 is a gapful number since it is divisible by the number (48) 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 45017808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66891552).

45017808 is an abundant number, since it is smaller than the sum of its proper divisors (88765296).

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

45017808 is a wasteful number, since it uses less digits than its factorization.

45017808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 45017808 is about 6709.5311311596. The cubic root of 45017808 is about 355.7362436360.

The spelling of 45017808 in words is "forty-five million, seventeen thousand, eight hundred eight".