581440052 has 48 divisors (see below), whose sum is σ = 1164824640. Its totient is φ = 252191232.

The previous prime is 581440049. The next prime is 581440063. The reversal of 581440052 is 250044185.

It is a junction number, because it is equal to n+sod(n) for n = 581439997 and 581440024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41723 + ... + 53885.

It is an arithmetic number, because the mean of its divisors is an integer number (24267180).

Almost surely, 2^581440052 is an apocalyptic number.

It is an amenable number.

581440052 is an abundant number, since it is smaller than the sum of its proper divisors (583384588).

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

581440052 is a wasteful number, since it uses less digits than its factorization.

581440052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12240 (or 12238 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 581440052 is about 24113.0680752160. The cubic root of 581440052 is about 834.6447157644.

The spelling of 581440052 in words is "five hundred eighty-one million, four hundred forty thousand, fifty-two".