5155720000 has 140 divisors (see below), whose sum is σ = 13000241716. Its totient is φ = 2027520000.

The previous prime is 5155719949. The next prime is 5155720001. The reversal of 5155720000 is 275515.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 4994531584 + 161188416 = 70672^2 + 12696^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155720001) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 2438944 + ... + 2441056.

Almost surely, 2^5155720000 is an apocalyptic number.

5155720000 is a gapful number since it is divisible by the number (50) 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 5155720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6500120858).

5155720000 is an abundant number, since it is smaller than the sum of its proper divisors (7844521716).

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

5155720000 is an equidigital number, since it uses as much as digits as its factorization.

5155720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206 (or 2181 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 5155720000 is about 71803.3425405809. The cubic root of 5155720000 is about 1727.5466131625.

Adding to 5155720000 its reverse (275515), we get a palindrome (5155995515).

The spelling of 5155720000 in words is "five billion, one hundred fifty-five million, seven hundred twenty thousand".