5251151243 has 4 divisors (see below), whose sum is σ = 5655085968. Its totient is φ = 4847216520.

The previous prime is 5251151237. The next prime is 5251151263. The reversal of 5251151243 is 3421511525.

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 5251151243 - 2⁶ = 5251151179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5251151203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201967343 + ... + 201967368.

It is an arithmetic number, because the mean of its divisors is an integer number (1413771492).

Almost surely, 2^5251151243 is an apocalyptic number.

5251151243 is a deficient number, since it is larger than the sum of its proper divisors (403934725).

5251151243 is a wasteful number, since it uses less digits than its factorization.

5251151243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403934724.

The product of its digits is 6000, while the sum is 29.

The square root of 5251151243 is about 72464.8276269253. The cubic root of 5251151243 is about 1738.1403528836.

Adding to 5251151243 its reverse (3421511525), we get a palindrome (8672662768).

The spelling of 5251151243 in words is "five billion, two hundred fifty-one million, one hundred fifty-one thousand, two hundred forty-three".