45717681 has 16 divisors (see below), whose sum is σ = 63497088. Its totient is φ = 29232000.

The previous prime is 45717677. The next prime is 45717689. The reversal of 45717681 is 18671754.

45717681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45717681 - 2² = 45717677 is a prime.

It is a super-2 number, since 2×45717681² = 4180212712035522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45717689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4981 + ... + 10781.

It is an arithmetic number, because the mean of its divisors is an integer number (3968568).

Almost surely, 2^45717681 is an apocalyptic number.

It is an amenable number.

45717681 is a deficient number, since it is larger than the sum of its proper divisors (17779407).

45717681 is a wasteful number, since it uses less digits than its factorization.

45717681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5912.

The product of its digits is 47040, while the sum is 39.

The square root of 45717681 is about 6761.4851179308. The cubic root of 45717681 is about 357.5702660717.

The spelling of 45717681 in words is "forty-five million, seven hundred seventeen thousand, six hundred eighty-one".