523022121 has 12 divisors (see below), whose sum is σ = 775895172. Its totient is φ = 339257376.

The previous prime is 523022089. The next prime is 523022131. The reversal of 523022121 is 121220325.

523022121 is a `hidden beast` number, since 523 + 0 + 22 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 296218521 + 226803600 = 17211^2 + 15060^2 .

It is not a de Polignac number, because 523022121 - 2⁵ = 523022089 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 523022094 and 523022103.

It is not an unprimeable number, because it can be changed into a prime (523022131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784986 + ... + 785651.

It is an arithmetic number, because the mean of its divisors is an integer number (64657931).

Almost surely, 2^523022121 is an apocalyptic number.

It is an amenable number.

523022121 is a deficient number, since it is larger than the sum of its proper divisors (252873051).

523022121 is a wasteful number, since it uses less digits than its factorization.

523022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570680 (or 1570677 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 523022121 is about 22869.6768888413. The cubic root of 523022121 is about 805.6999793613.

Adding to 523022121 its reverse (121220325), we get a palindrome (644242446).

The spelling of 523022121 in words is "five hundred twenty-three million, twenty-two thousand, one hundred twenty-one".