45505237 has 2 divisors, whose sum is σ = 45505238. Its totient is φ = 45505236.

The previous prime is 45505193. The next prime is 45505279. The reversal of 45505237 is 73250554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24216241 + 21288996 = 4921^2 + 4614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45505237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45505199 and 45505208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45505337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22752618 + 22752619.

It is an arithmetic number, because the mean of its divisors is an integer number (22752619).

Almost surely, 2^45505237 is an apocalyptic number.

It is an amenable number.

45505237 is a deficient number, since it is larger than the sum of its proper divisors (1).

45505237 is an equidigital number, since it uses as much as digits as its factorization.

45505237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 45505237 is about 6745.7569627137. The cubic root of 45505237 is about 357.0155454108.

The spelling of 45505237 in words is "forty-five million, five hundred five thousand, two hundred thirty-seven".