5157926581 has 2 divisors, whose sum is σ = 5157926582. Its totient is φ = 5157926580.

The previous prime is 5157926539. The next prime is 5157926611. The reversal of 5157926581 is 1856297515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3852188356 + 1305738225 = 62066^2 + 36135^2 .

It is a cyclic number.

It is not a de Polignac number, because 5157926581 - 2²⁹ = 4621055669 is a prime.

It is a super-3 number, since 3×5157926581³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5157926881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578963290 + 2578963291.

It is an arithmetic number, because the mean of its divisors is an integer number (2578963291).

Almost surely, 2^5157926581 is an apocalyptic number.

It is an amenable number.

5157926581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5157926581 is an equidigital number, since it uses as much as digits as its factorization.

5157926581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 49.

The square root of 5157926581 is about 71818.7063445172. The cubic root of 5157926581 is about 1727.7930338265.

The spelling of 5157926581 in words is "five billion, one hundred fifty-seven million, nine hundred twenty-six thousand, five hundred eighty-one".