523485378 has 72 divisors (see below), whose sum is σ = 1289345148. Its totient is φ = 152570304.

The previous prime is 523485373. The next prime is 523485379. The reversal of 523485378 is 873584325.

523485378 is a `hidden beast` number, since 523 + 4 + 8 + 53 + 78 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 491641929 + 31843449 = 22173^2 + 5643^2 .

It is not an unprimeable number, because it can be changed into a prime (523485373) 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, 81376 + ... + 87572.

Almost surely, 2^523485378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523485378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644672574).

523485378 is an abundant number, since it is smaller than the sum of its proper divisors (765859770).

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

523485378 is a wasteful number, since it uses less digits than its factorization.

523485378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6256 (or 6234 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 523485378 is about 22879.8028400596. The cubic root of 523485378 is about 805.9377870282.

The spelling of 523485378 in words is "five hundred twenty-three million, four hundred eighty-five thousand, three hundred seventy-eight".