423525291 has 16 divisors (see below), whose sum is σ = 655006464. Its totient is φ = 238401504.

The previous prime is 423525287. The next prime is 423525313. The reversal of 423525291 is 192525324.

It is not a de Polignac number, because 423525291 - 2² = 423525287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423525281) 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 in 15 ways as a sum of consecutive naturals, for example, 149100 + ... + 151913.

It is an arithmetic number, because the mean of its divisors is an integer number (40937904).

Almost surely, 2^423525291 is an apocalyptic number.

423525291 is a deficient number, since it is larger than the sum of its proper divisors (231481173).

423525291 is a wasteful number, since it uses less digits than its factorization.

423525291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301090.

The product of its digits is 21600, while the sum is 33.

The square root of 423525291 is about 20579.7301002710. The cubic root of 423525291 is about 750.9766778041.

Adding to 423525291 its sum of digits (33), we get a palindrome (423525324).

The spelling of 423525291 in words is "four hundred twenty-three million, five hundred twenty-five thousand, two hundred ninety-one".