5215398156 has 18 divisors (see below), whose sum is σ = 13183367652. Its totient is φ = 1738466040.

The previous prime is 5215398151. The next prime is 5215398157. The reversal of 5215398156 is 6518935125.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (5215398151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72436050 + ... + 72436121.

It is an arithmetic number, because the mean of its divisors is an integer number (732409314).

Almost surely, 2^5215398156 is an apocalyptic number.

It is an amenable number.

5215398156 is an abundant number, since it is smaller than the sum of its proper divisors (7967969496).

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

5215398156 is a wasteful number, since it uses less digits than its factorization.

5215398156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144872181 (or 144872176 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The square root of 5215398156 is about 72217.7135888419. The cubic root of 5215398156 is about 1734.1865876808.

The spelling of 5215398156 in words is "five billion, two hundred fifteen million, three hundred ninety-eight thousand, one hundred fifty-six".