6515248537 has 4 divisors (see below), whose sum is σ = 7445998336. Its totient is φ = 5584498740.

The previous prime is 6515248513. The next prime is 6515248577. The reversal of 6515248537 is 7358425156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6515248537 - 2¹¹ = 6515246489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6515248577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465374889 + ... + 465374902.

It is an arithmetic number, because the mean of its divisors is an integer number (1861499584).

Almost surely, 2^6515248537 is an apocalyptic number.

It is an amenable number.

6515248537 is a deficient number, since it is larger than the sum of its proper divisors (930749799).

6515248537 is an equidigital number, since it uses as much as digits as its factorization.

6515248537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930749798.

The product of its digits is 1008000, while the sum is 46.

The square root of 6515248537 is about 80717.0894978257. The cubic root of 6515248537 is about 1867.7138062535.

The spelling of 6515248537 in words is "six billion, five hundred fifteen million, two hundred forty-eight thousand, five hundred thirty-seven".