523005030 has 72 divisors (see below), whose sum is σ = 1405325376. Its totient is φ = 134946720.

The previous prime is 523004987. The next prime is 523005031. The reversal of 523005030 is 30500325.

It is a super-2 number, since 2×523005030² = 547068522810601800, which contains 22 as substring.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 523004994 and 523005012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523005031) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 83467 + ... + 89513.

It is an arithmetic number, because the mean of its divisors is an integer number (19518408).

Almost surely, 2^523005030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523005030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702662688).

523005030 is an abundant number, since it is smaller than the sum of its proper divisors (882320346).

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

523005030 is a wasteful number, since it uses less digits than its factorization.

523005030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6122 (or 6088 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 523005030 is about 22869.3032250657. The cubic root of 523005030 is about 805.6912032071.

Adding to 523005030 its reverse (30500325), we get a palindrome (553505355).

The spelling of 523005030 in words is "five hundred twenty-three million, five thousand, thirty".