501450121 has 2 divisors, whose sum is σ = 501450122. Its totient is φ = 501450120.

The previous prime is 501450007. The next prime is 501450127. The reversal of 501450121 is 121054105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462250000 + 39200121 = 21500^2 + 6261^2 .

It is a cyclic number.

It is not a de Polignac number, because 501450121 - 2²¹ = 499352969 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (501450127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250725060 + 250725061.

It is an arithmetic number, because the mean of its divisors is an integer number (250725061).

Almost surely, 2^501450121 is an apocalyptic number.

It is an amenable number.

501450121 is a deficient number, since it is larger than the sum of its proper divisors (1).

501450121 is an equidigital number, since it uses as much as digits as its factorization.

501450121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 501450121 is about 22393.0819897575. The cubic root of 501450121 is about 794.4670932511.

The spelling of 501450121 in words is "five hundred one million, four hundred fifty thousand, one hundred twenty-one".