50001781351 has 4 divisors (see below), whose sum is σ = 50460513400. Its totient is φ = 49543049304.

The previous prime is 50001781343. The next prime is 50001781387. The reversal of 50001781351 is 15318710005.

50001781351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50001781351 - 2³ = 50001781343 is a prime.

It is a super-2 number, since 2×50001781351² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50001761351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229365861 + ... + 229366078.

It is an arithmetic number, because the mean of its divisors is an integer number (12615128350).

Almost surely, 2^50001781351 is an apocalyptic number.

50001781351 is a deficient number, since it is larger than the sum of its proper divisors (458732049).

50001781351 is a wasteful number, since it uses less digits than its factorization.

50001781351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458732048.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 50001781351 in words is "fifty billion, one million, seven hundred eighty-one thousand, three hundred fifty-one".