501421301 has 2 divisors, whose sum is σ = 501421302. Its totient is φ = 501421300.

The previous prime is 501421259. The next prime is 501421309. The reversal of 501421301 is 103124105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277888900 + 223532401 = 16670^2 + 14951^2 .

It is a cyclic number.

It is not a de Polignac number, because 501421301 - 2¹⁰ = 501420277 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 501421301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501421309) 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 as a sum of consecutive naturals, namely, 250710650 + 250710651.

It is an arithmetic number, because the mean of its divisors is an integer number (250710651).

Almost surely, 2^501421301 is an apocalyptic number.

It is an amenable number.

501421301 is a deficient number, since it is larger than the sum of its proper divisors (1).

501421301 is an equidigital number, since it uses as much as digits as its factorization.

501421301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 501421301 is about 22392.4384782006. The cubic root of 501421301 is about 794.4518727408.

Adding to 501421301 its reverse (103124105), we get a palindrome (604545406).

The spelling of 501421301 in words is "five hundred one million, four hundred twenty-one thousand, three hundred one".