5155312521 has 8 divisors (see below), whose sum is σ = 6976343584. Its totient is φ = 3385578240.

The previous prime is 5155312501. The next prime is 5155312531. The reversal of 5155312521 is 1252135515.

5155312521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5155312521 - 2⁶ = 5155312457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5155312501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12823960 + ... + 12824361.

It is an arithmetic number, because the mean of its divisors is an integer number (872042948).

Almost surely, 2^5155312521 is an apocalyptic number.

It is an amenable number.

5155312521 is a deficient number, since it is larger than the sum of its proper divisors (1821031063).

5155312521 is a wasteful number, since it uses less digits than its factorization.

5155312521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25648391.

The product of its digits is 7500, while the sum is 30.

The square root of 5155312521 is about 71800.5050191153. The cubic root of 5155312521 is about 1727.5011001199.

The spelling of 5155312521 in words is "five billion, one hundred fifty-five million, three hundred twelve thousand, five hundred twenty-one".