423525551 has 2 divisors, whose sum is σ = 423525552. Its totient is φ = 423525550.

The previous prime is 423525481. The next prime is 423525563. The reversal of 423525551 is 155525324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423525551 - 2²² = 419331247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423524551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211762775 + 211762776.

It is an arithmetic number, because the mean of its divisors is an integer number (211762776).

Almost surely, 2^423525551 is an apocalyptic number.

423525551 is a deficient number, since it is larger than the sum of its proper divisors (1).

423525551 is an equidigital number, since it uses as much as digits as its factorization.

423525551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30000, while the sum is 32.

The square root of 423525551 is about 20579.7364171653. The cubic root of 423525551 is about 750.9768314776.

The spelling of 423525551 in words is "four hundred twenty-three million, five hundred twenty-five thousand, five hundred fifty-one".