423005251 has 4 divisors (see below), whose sum is σ = 423450072. Its totient is φ = 422560432.

The previous prime is 423005239. The next prime is 423005269. The reversal of 423005251 is 152500324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423005251 - 2¹³ = 422997059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423015251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220981 + ... + 222886.

It is an arithmetic number, because the mean of its divisors is an integer number (105862518).

Almost surely, 2^423005251 is an apocalyptic number.

423005251 is a deficient number, since it is larger than the sum of its proper divisors (444821).

423005251 is an equidigital number, since it uses as much as digits as its factorization.

423005251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444820.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 423005251 is about 20567.0914569854. The cubic root of 423005251 is about 750.6691811216.

Adding to 423005251 its reverse (152500324), we get a palindrome (575505575).

The spelling of 423005251 in words is "four hundred twenty-three million, five thousand, two hundred fifty-one".