45681761 has 4 divisors (see below), whose sum is σ = 45988500. Its totient is φ = 45375024.

The previous prime is 45681731. The next prime is 45681767. The reversal of 45681761 is 16718654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18318400 + 27363361 = 4280^2 + 5231^2 .

It is a cyclic number.

It is not a de Polignac number, because 45681761 - 2¹⁴ = 45665377 is a prime.

It is a super-2 number, since 2×45681761² = 4173646576122242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45681767) 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 3 ways as a sum of consecutive naturals, for example, 153146 + ... + 153443.

It is an arithmetic number, because the mean of its divisors is an integer number (11497125).

Almost surely, 2^45681761 is an apocalyptic number.

It is an amenable number.

45681761 is a deficient number, since it is larger than the sum of its proper divisors (306739).

45681761 is a wasteful number, since it uses less digits than its factorization.

45681761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306738.

The product of its digits is 40320, while the sum is 38.

The square root of 45681761 is about 6758.8283747999. The cubic root of 45681761 is about 357.4765948783.

The spelling of 45681761 in words is "forty-five million, six hundred eighty-one thousand, seven hundred sixty-one".