50721269 has 2 divisors, whose sum is σ = 50721270. Its totient is φ = 50721268.

The previous prime is 50721259. The next prime is 50721277. The reversal of 50721269 is 96212705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48580900 + 2140369 = 6970^2 + 1463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50721269 is a prime.

It is a super-2 number, since 2×50721269² = 5145294257940722, 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 (50721259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25360634 + 25360635.

It is an arithmetic number, because the mean of its divisors is an integer number (25360635).

Almost surely, 2^50721269 is an apocalyptic number.

It is an amenable number.

50721269 is a deficient number, since it is larger than the sum of its proper divisors (1).

50721269 is an equidigital number, since it uses as much as digits as its factorization.

50721269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 50721269 is about 7121.8866180247. The cubic root of 50721269 is about 370.1661513330.

The spelling of 50721269 in words is "fifty million, seven hundred twenty-one thousand, two hundred sixty-nine".