45639701 has 2 divisors, whose sum is σ = 45639702. Its totient is φ = 45639700.

The previous prime is 45639667. The next prime is 45639787. The reversal of 45639701 is 10793654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28408900 + 17230801 = 5330^2 + 4151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45639701 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45639001) 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 as a sum of consecutive naturals, namely, 22819850 + 22819851.

It is an arithmetic number, because the mean of its divisors is an integer number (22819851).

Almost surely, 2^45639701 is an apocalyptic number.

It is an amenable number.

45639701 is a deficient number, since it is larger than the sum of its proper divisors (1).

45639701 is an equidigital number, since it uses as much as digits as its factorization.

45639701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 45639701 is about 6755.7161722500. The cubic root of 45639701 is about 357.3668495293.

The spelling of 45639701 in words is "forty-five million, six hundred thirty-nine thousand, seven hundred one".