5251989767 has 4 divisors (see below), whose sum is σ = 5252495976. Its totient is φ = 5251483560.

The previous prime is 5251989733. The next prime is 5251989779. The reversal of 5251989767 is 7679891525.

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 5251989767 - 2¹² = 5251985671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251989727) 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, 237209 + ... + 258402.

It is an arithmetic number, because the mean of its divisors is an integer number (1313123994).

Almost surely, 2^5251989767 is an apocalyptic number.

5251989767 is a deficient number, since it is larger than the sum of its proper divisors (506209).

5251989767 is a wasteful number, since it uses less digits than its factorization.

5251989767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506208.

The product of its digits is 9525600, while the sum is 59.

The square root of 5251989767 is about 72470.6131269772. The cubic root of 5251989767 is about 1738.2328656021.

The spelling of 5251989767 in words is "five billion, two hundred fifty-one million, nine hundred eighty-nine thousand, seven hundred sixty-seven".