510121 has 2 divisors, whose sum is σ = 510122. Its totient is φ = 510120.

The previous prime is 510101. The next prime is 510127. The reversal of 510121 is 121015.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404496 + 105625 = 636^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 510121 - 2⁵ = 510089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 510098 and 510107.

It is not a weakly prime, because it can be changed into another prime (510127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255060 + 255061.

It is an arithmetic number, because the mean of its divisors is an integer number (255061).

2⁵¹⁰¹²¹ is an apocalyptic number.

It is an amenable number.

510121 is a deficient number, since it is larger than the sum of its proper divisors (1).

510121 is an equidigital number, since it uses as much as digits as its factorization.

510121 is an evil number, because the sum of its binary digits is even.

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

The square root of 510121 is about 714.2275547751. The cubic root of 510121 is about 79.9020154535.

Adding to 510121 its reverse (121015), we get a palindrome (631136).

It can be divided in two parts, 5 and 10121, that multiplied together give a palindrome (50605).

The spelling of 510121 in words is "five hundred ten thousand, one hundred twenty-one".