5254581643 has 2 divisors, whose sum is σ = 5254581644. Its totient is φ = 5254581642.

The previous prime is 5254581641. The next prime is 5254581691. The reversal of 5254581643 is 3461854525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5254581643 - 2¹ = 5254581641 is a prime.

It is a super-2 number, since 2×5254581643² = 55221256485905158898, which contains 22 as substring.

Together with 5254581641, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5254581643.

It is not a weakly prime, because it can be changed into another prime (5254581641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627290821 + 2627290822.

It is an arithmetic number, because the mean of its divisors is an integer number (2627290822).

Almost surely, 2^5254581643 is an apocalyptic number.

5254581643 is a deficient number, since it is larger than the sum of its proper divisors (1).

5254581643 is an equidigital number, since it uses as much as digits as its factorization.

5254581643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576000, while the sum is 43.

The square root of 5254581643 is about 72488.4931765035. The cubic root of 5254581643 is about 1738.5187599853.

The spelling of 5254581643 in words is "five billion, two hundred fifty-four million, five hundred eighty-one thousand, six hundred forty-three".