5438886251 has 4 divisors (see below), whose sum is σ = 5488784400. Its totient is φ = 5388988104.

The previous prime is 5438886247. The next prime is 5438886253. The reversal of 5438886251 is 1526888345.

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 5438886251 - 2² = 5438886247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5438886251.

It is not an unprimeable number, because it can be changed into a prime (5438886253) 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, 24948911 + ... + 24949128.

It is an arithmetic number, because the mean of its divisors is an integer number (1372196100).

Almost surely, 2^5438886251 is an apocalyptic number.

5438886251 is a deficient number, since it is larger than the sum of its proper divisors (49898149).

5438886251 is a wasteful number, since it uses less digits than its factorization.

5438886251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49898148.

The product of its digits is 1843200, while the sum is 50.

The square root of 5438886251 is about 73748.8050818452. The cubic root of 5438886251 is about 1758.6118370280.

The spelling of 5438886251 in words is "five billion, four hundred thirty-eight million, eight hundred eighty-six thousand, two hundred fifty-one".