523919980 has 24 divisors (see below), whose sum is σ = 1109973312. Its totient is φ = 207712512.

The previous prime is 523919971. The next prime is 523919983. The reversal of 523919980 is 89919325.

It is a self number, because there is not a number n which added to its sum of digits gives 523919980.

It is not an unprimeable number, because it can be changed into a prime (523919983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113652 + ... + 118171.

It is an arithmetic number, because the mean of its divisors is an integer number (46248888).

Almost surely, 2^523919980 is an apocalyptic number.

It is an amenable number.

523919980 is an abundant number, since it is smaller than the sum of its proper divisors (586053332).

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

523919980 is a wasteful number, since it uses less digits than its factorization.

523919980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231945 (or 231943 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 523919980 is about 22889.2983728204. The cubic root of 523919980 is about 806.1607574640.

The spelling of 523919980 in words is "five hundred twenty-three million, nine hundred nineteen thousand, nine hundred eighty".