523452420321 has 4 divisors (see below), whose sum is σ = 697936560432. Its totient is φ = 348968280212.

The previous prime is 523452420289. The next prime is 523452420329. The reversal of 523452420321 is 123024254325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 523452420321 - 2⁵ = 523452420289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (523452420329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87242070051 + ... + 87242070056.

It is an arithmetic number, because the mean of its divisors is an integer number (174484140108).

Almost surely, 2^523452420321 is an apocalyptic number.

It is an amenable number.

523452420321 is a deficient number, since it is larger than the sum of its proper divisors (174484140111).

523452420321 is a wasteful number, since it uses less digits than its factorization.

523452420321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174484140110.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 523452420321 its reverse (123024254325), we get a palindrome (646476674646).

The spelling of 523452420321 in words is "five hundred twenty-three billion, four hundred fifty-two million, four hundred twenty thousand, three hundred twenty-one".