50145509 has 2 divisors, whose sum is σ = 50145510. Its totient is φ = 50145508.

The previous prime is 50145493. The next prime is 50145517. The reversal of 50145509 is 90554105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36844900 + 13300609 = 6070^2 + 3647^2 .

It is a cyclic number.

It is not a de Polignac number, because 50145509 - 2⁴ = 50145493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50145209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25072754 + 25072755.

It is an arithmetic number, because the mean of its divisors is an integer number (25072755).

Almost surely, 2^50145509 is an apocalyptic number.

It is an amenable number.

50145509 is a deficient number, since it is larger than the sum of its proper divisors (1).

50145509 is an equidigital number, since it uses as much as digits as its factorization.

50145509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 50145509 is about 7081.3493770608. The cubic root of 50145509 is about 368.7601769096.

The spelling of 50145509 in words is "fifty million, one hundred forty-five thousand, five hundred nine".