50340781 has 4 divisors (see below), whose sum is σ = 52076700. Its totient is φ = 48604864.

The previous prime is 50340779. The next prime is 50340793. The reversal of 50340781 is 18704305.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22610025 + 27730756 = 4755^2 + 5266^2 .

It is a cyclic number.

It is not a de Polignac number, because 50340781 - 2¹ = 50340779 is a prime.

It is a super-2 number, since 2×50340781² = 5068388463379922, which 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 (50340701) 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, 867916 + ... + 867973.

It is an arithmetic number, because the mean of its divisors is an integer number (13019175).

Almost surely, 2^50340781 is an apocalyptic number.

It is an amenable number.

50340781 is a deficient number, since it is larger than the sum of its proper divisors (1735919).

50340781 is a wasteful number, since it uses less digits than its factorization.

50340781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735918.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 50340781 is about 7095.1237480399. The cubic root of 50340781 is about 369.2382208443.

The spelling of 50340781 in words is "fifty million, three hundred forty thousand, seven hundred eighty-one".