5781322251 has 12 divisors (see below), whose sum is σ = 8713877328. Its totient is φ = 3686640144.

The previous prime is 5781322241. The next prime is 5781322291. The reversal of 5781322251 is 1522231875.

5781322251 is a `hidden beast` number, since 5 + 7 + 81 + 322 + 251 = 666.

It is not a de Polignac number, because 5781322251 - 2¹⁴ = 5781305867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5781322241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13964340 + ... + 13964753.

It is an arithmetic number, because the mean of its divisors is an integer number (726156444).

Almost surely, 2^5781322251 is an apocalyptic number.

5781322251 is a deficient number, since it is larger than the sum of its proper divisors (2932555077).

5781322251 is a wasteful number, since it uses less digits than its factorization.

5781322251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27929122 (or 27929119 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 5781322251 is about 76035.0067468926. The cubic root of 5781322251 is about 1794.7710646541.

The spelling of 5781322251 in words is "five billion, seven hundred eighty-one million, three hundred twenty-two thousand, two hundred fifty-one".