5215537965 has 32 divisors (see below), whose sum is σ = 9114809472. Its totient is φ = 2525600000.

The previous prime is 5215537949. The next prime is 5215537969. The reversal of 5215537965 is 5697355125.

It is a happy number.

It is not a de Polignac number, because 5215537965 - 2⁴ = 5215537949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215537969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116215 + ... + 154715.

It is an arithmetic number, because the mean of its divisors is an integer number (284837796).

Almost surely, 2^5215537965 is an apocalyptic number.

5215537965 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5215537965 is a deficient number, since it is larger than the sum of its proper divisors (3899271507).

5215537965 is a wasteful number, since it uses less digits than its factorization.

5215537965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39341.

The product of its digits is 1417500, while the sum is 48.

The square root of 5215537965 is about 72218.6815512441. The cubic root of 5215537965 is about 1734.2020836358.

The spelling of 5215537965 in words is "five billion, two hundred fifteen million, five hundred thirty-seven thousand, nine hundred sixty-five".