500901421 has 2 divisors, whose sum is σ = 500901422. Its totient is φ = 500901420.

The previous prime is 500901407. The next prime is 500901473. The reversal of 500901421 is 124109005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256448196 + 244453225 = 16014^2 + 15635^2 .

It is a cyclic number.

It is not a de Polignac number, because 500901421 - 2⁷ = 500901293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 500901392 and 500901401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500901221) 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, 250450710 + 250450711.

It is an arithmetic number, because the mean of its divisors is an integer number (250450711).

Almost surely, 2^500901421 is an apocalyptic number.

It is an amenable number.

500901421 is a deficient number, since it is larger than the sum of its proper divisors (1).

500901421 is an equidigital number, since it uses as much as digits as its factorization.

500901421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 500901421 is about 22380.8270848063. The cubic root of 500901421 is about 794.1772118502.

The spelling of 500901421 in words is "five hundred million, nine hundred one thousand, four hundred twenty-one".