50135240281 has 27 divisors (see below), whose sum is σ = 60455797311. Its totient is φ = 41453616624.

The previous prime is 50135240269. The next prime is 50135240291. The reversal of 50135240281 is 18204253105.

The square root of 50135240281 is 223909.

It is a perfect power (a square), and thus also a powerful number.

50135240281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 26289703881 + 23845536400 = 162141^2 + 154420^2 .

It is not a de Polignac number, because 50135240281 - 2¹¹ = 50135238233 is a prime.

It is a super-2 number, since 2×50135240281² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50135240291) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 45452976 + ... + 45454078.

Almost surely, 2^50135240281 is an apocalyptic number.

50135240281 is the 223909-th square number.

50135240281 is the 111955-th centered octagonal number.

It is an amenable number.

50135240281 is a deficient number, since it is larger than the sum of its proper divisors (10320557030).

50135240281 is an frugal number, since it uses more digits than its factorization.

50135240281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 50135240281 its reverse (18204253105), we get a palindrome (68339493386).

The spelling of 50135240281 in words is "fifty billion, one hundred thirty-five million, two hundred forty thousand, two hundred eighty-one".