423506651 has 2 divisors, whose sum is σ = 423506652. Its totient is φ = 423506650.

The previous prime is 423506647. The next prime is 423506683. The reversal of 423506651 is 156605324.

It is an a-pointer prime, because the next prime (423506683) can be obtained adding 423506651 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423506651 - 2² = 423506647 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423503651) 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, 211753325 + 211753326.

It is an arithmetic number, because the mean of its divisors is an integer number (211753326).

Almost surely, 2^423506651 is an apocalyptic number.

423506651 is a deficient number, since it is larger than the sum of its proper divisors (1).

423506651 is an equidigital number, since it uses as much as digits as its factorization.

423506651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 423506651 is about 20579.2772224877. The cubic root of 423506651 is about 750.9656604293.

The spelling of 423506651 in words is "four hundred twenty-three million, five hundred six thousand, six hundred fifty-one".