5239148581 has 2 divisors, whose sum is σ = 5239148582. Its totient is φ = 5239148580.

The previous prime is 5239148573. The next prime is 5239148591. The reversal of 5239148581 is 1858419325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3087580356 + 2151568225 = 55566^2 + 46385^2 .

It is a cyclic number.

It is not a de Polignac number, because 5239148581 - 2³ = 5239148573 is a prime.

It is a super-2 number, since 2×5239148581² = 54897355707588627122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5239148501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2619574290 + 2619574291.

It is an arithmetic number, because the mean of its divisors is an integer number (2619574291).

Almost surely, 2^5239148581 is an apocalyptic number.

It is an amenable number.

5239148581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5239148581 is an equidigital number, since it uses as much as digits as its factorization.

5239148581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 46.

The square root of 5239148581 is about 72381.9630916432. The cubic root of 5239148581 is about 1736.8150418202.

The spelling of 5239148581 in words is "five billion, two hundred thirty-nine million, one hundred forty-eight thousand, five hundred eighty-one".