523158020 has 144 divisors (see below), whose sum is σ = 1399628160. Its totient is φ = 160765440.

The previous prime is 523158019. The next prime is 523158029. The reversal of 523158020 is 20851325.

It is not an unprimeable number, because it can be changed into a prime (523158029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1507487 + ... + 1507833.

It is an arithmetic number, because the mean of its divisors is an integer number (9719640).

Almost surely, 2^523158020 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 523158020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699814080).

523158020 is an abundant number, since it is smaller than the sum of its proper divisors (876470140).

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

523158020 is a wasteful number, since it uses less digits than its factorization.

523158020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 523158020 is about 22872.6478572115. The cubic root of 523158020 is about 805.7697561037.

The spelling of 523158020 in words is "five hundred twenty-three million, one hundred fifty-eight thousand, twenty".