523305121 has 4 divisors (see below), whose sum is σ = 524497600. Its totient is φ = 522112644.

The previous prime is 523305119. The next prime is 523305127. The reversal of 523305121 is 121503325.

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 523305121 - 2¹ = 523305119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 523305092 and 523305101.

It is not an unprimeable number, because it can be changed into a prime (523305127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595581 + ... + 596458.

It is an arithmetic number, because the mean of its divisors is an integer number (131124400).

Almost surely, 2^523305121 is an apocalyptic number.

It is an amenable number.

523305121 is a deficient number, since it is larger than the sum of its proper divisors (1192479).

523305121 is a wasteful number, since it uses less digits than its factorization.

523305121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192478.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 523305121 is about 22875.8632842566. The cubic root of 523305121 is about 805.8452708461.

Adding to 523305121 its reverse (121503325), we get a palindrome (644808446).

The spelling of 523305121 in words is "five hundred twenty-three million, three hundred five thousand, one hundred twenty-one".