5162506781 has 4 divisors (see below), whose sum is σ = 5179323072. Its totient is φ = 5145690492.

The previous prime is 5162506763. The next prime is 5162506831. The reversal of 5162506781 is 1876052615.

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 5162506781 - 2²² = 5158312477 is a prime.

It is a super-2 number, since 2×5162506781² = 53302952527741963922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5162506081) 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, 8407685 + ... + 8408298.

It is an arithmetic number, because the mean of its divisors is an integer number (1294830768).

Almost surely, 2^5162506781 is an apocalyptic number.

It is an amenable number.

5162506781 is a deficient number, since it is larger than the sum of its proper divisors (16816291).

5162506781 is a wasteful number, since it uses less digits than its factorization.

5162506781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16816290.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 5162506781 is about 71850.5865042172. The cubic root of 5162506781 is about 1728.3043049266.

The spelling of 5162506781 in words is "five billion, one hundred sixty-two million, five hundred six thousand, seven hundred eighty-one".