523121022 has 48 divisors (see below), whose sum is σ = 1183880880. Its totient is φ = 166772736.

The previous prime is 523120999. The next prime is 523121023. The reversal of 523121022 is 220121325.

523121022 is a `hidden beast` number, since 523 + 121 + 0 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 523120986 and 523121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523121023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32638 + ... + 45950.

It is an arithmetic number, because the mean of its divisors is an integer number (24664185).

Almost surely, 2^523121022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523121022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591940440).

523121022 is an abundant number, since it is smaller than the sum of its proper divisors (660759858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523121022 is a wasteful number, since it uses less digits than its factorization.

523121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13417 (or 13414 counting only the distinct ones).

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

The square root of 523121022 is about 22871.8390602942. The cubic root of 523121022 is about 805.7507608409.

Adding to 523121022 its reverse (220121325), we get a palindrome (743242347).

The spelling of 523121022 in words is "five hundred twenty-three million, one hundred twenty-one thousand, twenty-two".