5123711251 has 4 divisors (see below), whose sum is σ = 5232726432. Its totient is φ = 5014696072.

The previous prime is 5123711249. The next prime is 5123711261. The reversal of 5123711251 is 1521173215.

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 5123711251 - 2¹ = 5123711249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5123711231) 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, 54507520 + ... + 54507613.

It is an arithmetic number, because the mean of its divisors is an integer number (1308181608).

Almost surely, 2^5123711251 is an apocalyptic number.

5123711251 is a deficient number, since it is larger than the sum of its proper divisors (109015181).

5123711251 is a wasteful number, since it uses less digits than its factorization.

5123711251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109015180.

The product of its digits is 2100, while the sum is 28.

The square root of 5123711251 is about 71580.1037370022. The cubic root of 5123711251 is about 1723.9640914413.

Adding to 5123711251 its reverse (1521173215), we get a palindrome (6644884466).

The spelling of 5123711251 in words is "five billion, one hundred twenty-three million, seven hundred eleven thousand, two hundred fifty-one".