466256821 has 2 divisors, whose sum is σ = 466256822. Its totient is φ = 466256820.

The previous prime is 466256761. The next prime is 466256911. The reversal of 466256821 is 128652664.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419676196 + 46580625 = 20486^2 + 6825^2 .

It is a cyclic number.

It is not a de Polignac number, because 466256821 - 2¹¹ = 466254773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (466256221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 233128410 + 233128411.

It is an arithmetic number, because the mean of its divisors is an integer number (233128411).

Almost surely, 2^466256821 is an apocalyptic number.

It is an amenable number.

466256821 is a deficient number, since it is larger than the sum of its proper divisors (1).

466256821 is an equidigital number, since it uses as much as digits as its factorization.

466256821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The square root of 466256821 is about 21592.9808271114. The cubic root of 466256821 is about 775.4284532035.

The spelling of 466256821 in words is "four hundred sixty-six million, two hundred fifty-six thousand, eight hundred twenty-one".