50201681 has 4 divisors (see below), whose sum is σ = 50222592. Its totient is φ = 50180772.

The previous prime is 50201651. The next prime is 50201699. The reversal of 50201681 is 18610205.

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 50201681 - 2¹⁴ = 50185297 is a prime.

It is a super-2 number, since 2×50201681² = 5040417550451522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50201621) 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, 6305 + ... + 11838.

It is an arithmetic number, because the mean of its divisors is an integer number (12555648).

Almost surely, 2^50201681 is an apocalyptic number.

It is an amenable number.

50201681 is a deficient number, since it is larger than the sum of its proper divisors (20911).

50201681 is a wasteful number, since it uses less digits than its factorization.

50201681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20910.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 50201681 is about 7085.3144602057. The cubic root of 50201681 is about 368.8978181289.

Adding to 50201681 its reverse (18610205), we get a palindrome (68811886).

The spelling of 50201681 in words is "fifty million, two hundred one thousand, six hundred eighty-one".