5112391 has 4 divisors (see below), whose sum is σ = 5145112. Its totient is φ = 5079672.

The previous prime is 5112389. The next prime is 5112403. The reversal of 5112391 is 1932115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5112391 - 2¹ = 5112389 is a prime.

It is a super-2 number, since 2×5112391² = 52273083473762, 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 (5112361) 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, 16125 + ... + 16438.

It is an arithmetic number, because the mean of its divisors is an integer number (1286278).

Almost surely, 2^5112391 is an apocalyptic number.

5112391 is a deficient number, since it is larger than the sum of its proper divisors (32721).

5112391 is a wasteful number, since it uses less digits than its factorization.

5112391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32720.

The product of its digits is 270, while the sum is 22.

The square root of 5112391 is about 2261.0597073054. The cubic root of 5112391 is about 172.2693521763.

Subtracting from 5112391 its product of digits (270), we obtain a square (5112121 = 2261²).

The spelling of 5112391 in words is "five million, one hundred twelve thousand, three hundred ninety-one".