523043380 has 12 divisors (see below), whose sum is σ = 1098391140. Its totient is φ = 209217344.

The previous prime is 523043371. The next prime is 523043399. The reversal of 523043380 is 83340325.

It can be written as a sum of positive squares in 2 ways, for example, as 256896784 + 266146596 = 16028^2 + 16314^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13076065 + ... + 13076104.

It is an arithmetic number, because the mean of its divisors is an integer number (91532595).

Almost surely, 2^523043380 is an apocalyptic number.

It is an amenable number.

523043380 is an abundant number, since it is smaller than the sum of its proper divisors (575347760).

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

523043380 is a wasteful number, since it uses less digits than its factorization.

523043380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26152178 (or 26152176 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 523043380 is about 22870.1416698717. The cubic root of 523043380 is about 805.7108954986.

The spelling of 523043380 in words is "five hundred twenty-three million, forty-three thousand, three hundred eighty".