50716781 has 4 divisors (see below), whose sum is σ = 51104064. Its totient is φ = 50329500.

The previous prime is 50716759. The next prime is 50716811. The reversal of 50716781 is 18761705.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50716781 - 2⁶ = 50716717 is a prime.

It is a super-2 number, since 2×50716781² = 5144383750003922, 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 (50716481) 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, 193445 + ... + 193706.

It is an arithmetic number, because the mean of its divisors is an integer number (12776016).

Almost surely, 2^50716781 is an apocalyptic number.

It is an amenable number.

50716781 is a deficient number, since it is larger than the sum of its proper divisors (387283).

50716781 is a wasteful number, since it uses less digits than its factorization.

50716781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387282.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 50716781 is about 7121.5715260046. The cubic root of 50716781 is about 370.1552331342.

The spelling of 50716781 in words is "fifty million, seven hundred sixteen thousand, seven hundred eighty-one".