5155185520 has 80 divisors (see below), whose sum is σ = 12128688000. Its totient is φ = 2037602304.

The previous prime is 5155185487. The next prime is 5155185521. The reversal of 5155185520 is 255815515.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 5155185520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155185521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4961161 + ... + 4962199.

It is an arithmetic number, because the mean of its divisors is an integer number (151608600).

Almost surely, 2^5155185520 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 5155185520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6064344000).

5155185520 is an abundant number, since it is smaller than the sum of its proper divisors (6973502480).

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

5155185520 is a wasteful number, since it uses less digits than its factorization.

5155185520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 1724 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 37.

The square root of 5155185520 is about 71799.6206118110. The cubic root of 5155185520 is about 1727.4869143540.

The spelling of 5155185520 in words is "five billion, one hundred fifty-five million, one hundred eighty-five thousand, five hundred twenty".