50172450749 has 2 divisors, whose sum is σ = 50172450750. Its totient is φ = 50172450748.

The previous prime is 50172450673. The next prime is 50172450767. The reversal of 50172450749 is 94705427105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33285448249 + 16887002500 = 182443^2 + 129950^2 .

It is a cyclic number.

It is not a de Polignac number, because 50172450749 - 2²⁰ = 50171402173 is a prime.

It is a super-2 number, since 2×50172450749² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50172459749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25086225374 + 25086225375.

It is an arithmetic number, because the mean of its divisors is an integer number (25086225375).

Almost surely, 2^50172450749 is an apocalyptic number.

It is an amenable number.

50172450749 is a deficient number, since it is larger than the sum of its proper divisors (1).

50172450749 is an equidigital number, since it uses as much as digits as its factorization.

50172450749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 50172450749 in words is "fifty billion, one hundred seventy-two million, four hundred fifty thousand, seven hundred forty-nine".