423163555 has 4 divisors (see below), whose sum is σ = 507796272. Its totient is φ = 338530840.

The previous prime is 423163549. The next prime is 423163577. The reversal of 423163555 is 555361324.

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

It is not a de Polignac number, because 423163555 - 2¹¹ = 423161507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423163555.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42316351 + ... + 42316360.

It is an arithmetic number, because the mean of its divisors is an integer number (126949068).

Almost surely, 2^423163555 is an apocalyptic number.

423163555 is a deficient number, since it is larger than the sum of its proper divisors (84632717).

423163555 is an equidigital number, since it uses as much as digits as its factorization.

423163555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84632716.

The product of its digits is 54000, while the sum is 34.

The square root of 423163555 is about 20570.9395750413. The cubic root of 423163555 is about 750.7628120422.

The spelling of 423163555 in words is "four hundred twenty-three million, one hundred sixty-three thousand, five hundred fifty-five".