45810081 has 6 divisors (see below), whose sum is σ = 66170130. Its totient is φ = 30540048.

The previous prime is 45810077. The next prime is 45810097. The reversal of 45810081 is 18001854.

45810081 is a `hidden beast` number, since 4 + 581 + 0 + 0 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 44675856 + 1134225 = 6684^2 + 1065^2 .

It is not a de Polignac number, because 45810081 - 2² = 45810077 is a prime.

It is a super-2 number, since 2×45810081² = 4197127042453122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45810001) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2544996 + ... + 2545013.

It is an arithmetic number, because the mean of its divisors is an integer number (11028355).

Almost surely, 2^45810081 is an apocalyptic number.

It is an amenable number.

45810081 is a deficient number, since it is larger than the sum of its proper divisors (20360049).

45810081 is a wasteful number, since it uses less digits than its factorization.

45810081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090015 (or 5090012 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 45810081 is about 6768.3144873742. The cubic root of 45810081 is about 357.8109990377.

The spelling of 45810081 in words is "forty-five million, eight hundred ten thousand, eighty-one".