50121311 has 4 divisors (see below), whose sum is σ = 51343824. Its totient is φ = 48898800.

The previous prime is 50121299. The next prime is 50121319. The reversal of 50121311 is 11312105.

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 50121311 - 2¹⁴ = 50104927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50121319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611195 + ... + 611276.

It is an arithmetic number, because the mean of its divisors is an integer number (12835956).

Almost surely, 2^50121311 is an apocalyptic number.

50121311 is a deficient number, since it is larger than the sum of its proper divisors (1222513).

50121311 is a wasteful number, since it uses less digits than its factorization.

50121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222512.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 50121311 is about 7079.6405982225. The cubic root of 50121311 is about 368.7008515938.

Adding to 50121311 its reverse (11312105), we get a palindrome (61433416).

It can be divided in two parts, 501 and 21311, that added together give a palindrome (21812).

The spelling of 50121311 in words is "fifty million, one hundred twenty-one thousand, three hundred eleven".