523025140 has 48 divisors (see below), whose sum is σ = 1201261824. Its totient is φ = 189705600.

The previous prime is 523025137. The next prime is 523025161. The reversal of 523025140 is 41520325.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89797 + ... + 95443.

It is an arithmetic number, because the mean of its divisors is an integer number (25026288).

Almost surely, 2^523025140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523025140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600630912).

523025140 is an abundant number, since it is smaller than the sum of its proper divisors (678236684).

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

523025140 is a wasteful number, since it uses less digits than its factorization.

523025140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6088 (or 6086 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 523025140 is about 22869.7428931766. The cubic root of 523025140 is about 805.7015295848.

Adding to 523025140 its reverse (41520325), we get a palindrome (564545465).

The spelling of 523025140 in words is "five hundred twenty-three million, twenty-five thousand, one hundred forty".