523642056 has 128 divisors (see below), whose sum is σ = 1562876160. Its totient is φ = 143078400.

The previous prime is 523642039. The next prime is 523642079. The reversal of 523642056 is 650246325.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378486 + ... + 379866.

It is an arithmetic number, because the mean of its divisors is an integer number (12209970).

Almost surely, 2^523642056 is an apocalyptic number.

523642056 is a gapful number since it is divisible by the number (56) 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 523642056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781438080).

523642056 is an abundant number, since it is smaller than the sum of its proper divisors (1039234104).

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

523642056 is a wasteful number, since it uses less digits than its factorization.

523642056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 523642056 is about 22883.2265207510. The cubic root of 523642056 is about 806.0181841321.

The spelling of 523642056 in words is "five hundred twenty-three million, six hundred forty-two thousand, fifty-six".