523139000 has 64 divisors (see below), whose sum is σ = 1232712000. Its totient is φ = 207792000.

The previous prime is 523138963. The next prime is 523139003. The reversal of 523139000 is 931325.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523139003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147245 + ... + 150755.

It is an arithmetic number, because the mean of its divisors is an integer number (19261125).

Almost surely, 2^523139000 is an apocalyptic number.

523139000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523139000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (616356000).

523139000 is an abundant number, since it is smaller than the sum of its proper divisors (709573000).

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

523139000 is a wasteful number, since it uses less digits than its factorization.

523139000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681 (or 3667 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 523139000 is about 22872.2320729744. The cubic root of 523139000 is about 805.7599910959.

The spelling of 523139000 in words is "five hundred twenty-three million, one hundred thirty-nine thousand".