45491166 has 64 divisors (see below), whose sum is σ = 116444160. Its totient is φ = 12895200.

The previous prime is 45491161. The next prime is 45491179. The reversal of 45491166 is 66119454.

45491166 is a `hidden beast` number, since 4 + 5 + 491 + 166 = 666.

Its product of digits (25920) is a multiple of the sum of its prime divisors (960).

It is a self number, because there is not a number n which added to its sum of digits gives 45491166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45491161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56680 + ... + 57476.

It is an arithmetic number, because the mean of its divisors is an integer number (1819440).

Almost surely, 2^45491166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45491166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58222080).

45491166 is an abundant number, since it is smaller than the sum of its proper divisors (70952994).

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

45491166 is a wasteful number, since it uses less digits than its factorization.

45491166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 960 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 45491166 is about 6744.7139301827. The cubic root of 45491166 is about 356.9787431733.

The spelling of 45491166 in words is "forty-five million, four hundred ninety-one thousand, one hundred sixty-six".