45637637 has 2 divisors, whose sum is σ = 45637638. Its totient is φ = 45637636.

The previous prime is 45637609. The next prime is 45637643. The reversal of 45637637 is 73673654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44742721 + 894916 = 6689^2 + 946^2 .

It is a cyclic number.

It is not a de Polignac number, because 45637637 - 2¹⁴ = 45621253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45637594 and 45637603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45637937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22818818 + 22818819.

It is an arithmetic number, because the mean of its divisors is an integer number (22818819).

Almost surely, 2^45637637 is an apocalyptic number.

It is an amenable number.

45637637 is a deficient number, since it is larger than the sum of its proper divisors (1).

45637637 is an equidigital number, since it uses as much as digits as its factorization.

45637637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 41.

The square root of 45637637 is about 6755.5634109969. The cubic root of 45637637 is about 357.3614622876.

The spelling of 45637637 in words is "forty-five million, six hundred thirty-seven thousand, six hundred thirty-seven".