5223651840 has 240 divisors, whose sum is σ = 19736567136. Its totient is φ = 1266278400.

The previous prime is 5223651833. The next prime is 5223651847. The reversal of 5223651840 is 481563225.

5223651840 is a `hidden beast` number, since 522 + 3 + 6 + 51 + 84 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (5223651833) and next prime (5223651847).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5223651795 and 5223651804.

It is not an unprimeable number, because it can be changed into a prime (5223651847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243135 + ... + 263745.

Almost surely, 2^5223651840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5223651840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9868283568).

5223651840 is an abundant number, since it is smaller than the sum of its proper divisors (14512915296).

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

5223651840 is a wasteful number, since it uses less digits than its factorization.

5223651840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20651 (or 20632 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 5223651840 is about 72274.8354546726. The cubic root of 5223651840 is about 1735.1009240154.

The spelling of 5223651840 in words is "five billion, two hundred twenty-three million, six hundred fifty-one thousand, eight hundred forty".