50121 has 6 divisors (see below), whose sum is σ = 72410. Its totient is φ = 33408.

The previous prime is 50119. The next prime is 50123. The reversal of 50121 is 12105.

It is a happy number.

50121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (50119) and next prime (50123).

It can be written as a sum of positive squares in only one way, i.e., 35721 + 14400 = 189^2 + 120^2 .

It is not a de Polignac number, because 50121 - 2¹ = 50119 is a prime.

It is a super-2 number, since 2×50121² = 5024229282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 5569 = 50121 / (5 + 0 + 1 + 2 + 1).

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2776 + ... + 2793.

2⁵⁰¹²¹ is an apocalyptic number.

It is an amenable number.

50121 is a deficient number, since it is larger than the sum of its proper divisors (22289).

50121 is a wasteful number, since it uses less digits than its factorization.

50121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575 (or 5572 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 50121 is about 223.8771984817. The cubic root of 50121 is about 36.8700089003.

Adding to 50121 its reverse (12105), we get a palindrome (62226).

It can be divided in two parts, 50 and 121, that added together give a palindrome (171).

The spelling of 50121 in words is "fifty thousand, one hundred twenty-one".