423655451 has 2 divisors, whose sum is σ = 423655452. Its totient is φ = 423655450.

The previous prime is 423655429. The next prime is 423655457. The reversal of 423655451 is 154556324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423655451 - 2⁶ = 423655387 is a prime.

It is not a weakly prime, because it can be changed into another prime (423655457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211827725 + 211827726.

It is an arithmetic number, because the mean of its divisors is an integer number (211827726).

Almost surely, 2^423655451 is an apocalyptic number.

423655451 is a deficient number, since it is larger than the sum of its proper divisors (1).

423655451 is an equidigital number, since it uses as much as digits as its factorization.

423655451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 35.

The square root of 423655451 is about 20582.8921923038. The cubic root of 423655451 is about 751.0536012801.

The spelling of 423655451 in words is "four hundred twenty-three million, six hundred fifty-five thousand, four hundred fifty-one".