5249617920 has 312 divisors, whose sum is σ = 19166940000. Its totient is φ = 1325334528.

The previous prime is 5249617909. The next prime is 5249617921. The reversal of 5249617920 is 297169425.

5249617920 is a `hidden beast` number, since 5 + 2 + 4 + 9 + 617 + 9 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5249617921) 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, 3501331 + ... + 3502829.

It is an arithmetic number, because the mean of its divisors is an integer number (61432500).

Almost surely, 2^5249617920 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 5249617920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9583470000).

5249617920 is an abundant number, since it is smaller than the sum of its proper divisors (13917322080).

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

5249617920 is a wasteful number, since it uses less digits than its factorization.

5249617920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 5249617920 is about 72454.2470804852. The cubic root of 5249617920 is about 1737.9711588724.

The spelling of 5249617920 in words is "five billion, two hundred forty-nine million, six hundred seventeen thousand, nine hundred twenty".