45509687 has 2 divisors, whose sum is σ = 45509688. Its totient is φ = 45509686.

The previous prime is 45509657. The next prime is 45509699. The reversal of 45509687 is 78690554.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45509687 - 2¹² = 45505591 is a prime.

It is a super-2 number, since 2×45509687² = 4142263221675938, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45509627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22754843 + 22754844.

It is an arithmetic number, because the mean of its divisors is an integer number (22754844).

Almost surely, 2^45509687 is an apocalyptic number.

45509687 is a deficient number, since it is larger than the sum of its proper divisors (1).

45509687 is an equidigital number, since it uses as much as digits as its factorization.

45509687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 45509687 is about 6746.0867916148. The cubic root of 45509687 is about 357.0271826603.

The spelling of 45509687 in words is "forty-five million, five hundred nine thousand, six hundred eighty-seven".