45637609 has 2 divisors, whose sum is σ = 45637610. Its totient is φ = 45637608.

The previous prime is 45637583. The next prime is 45637637. The reversal of 45637609 is 90673654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45522009 + 115600 = 6747^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 45637609 - 2⁷ = 45637481 is a prime.

It is not a weakly prime, because it can be changed into another prime (45634609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22818804 + 22818805.

It is an arithmetic number, because the mean of its divisors is an integer number (22818805).

Almost surely, 2^45637609 is an apocalyptic number.

It is an amenable number.

45637609 is a deficient number, since it is larger than the sum of its proper divisors (1).

45637609 is an equidigital number, since it uses as much as digits as its factorization.

45637609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 45637609 is about 6755.5613386306. The cubic root of 45637609 is about 357.3613892038.

The spelling of 45637609 in words is "forty-five million, six hundred thirty-seven thousand, six hundred nine".