5051209 has 2 divisors, whose sum is σ = 5051210. Its totient is φ = 5051208.

The previous prime is 5051147. The next prime is 5051219. The reversal of 5051209 is 9021505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3717184 + 1334025 = 1928^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 5051209 - 2⁹ = 5050697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5051209.

It is not a weakly prime, because it can be changed into another prime (5051219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525604 + 2525605.

It is an arithmetic number, because the mean of its divisors is an integer number (2525605).

Almost surely, 2^5051209 is an apocalyptic number.

It is an amenable number.

5051209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5051209 is an equidigital number, since it uses as much as digits as its factorization.

5051209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 5051209 is about 2247.4894882958. The cubic root of 5051209 is about 171.5793873521.

The spelling of 5051209 in words is "five million, fifty-one thousand, two hundred nine".