5172154397 has 2 divisors, whose sum is σ = 5172154398. Its totient is φ = 5172154396.

The previous prime is 5172154381. The next prime is 5172154399. The reversal of 5172154397 is 7934512715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4568272921 + 603881476 = 67589^2 + 24574^2 .

It is a cyclic number.

It is not a de Polignac number, because 5172154397 - 2⁴ = 5172154381 is a prime.

It is a super-3 number, since 3×5172154397³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 5172154399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5172154399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2586077198 + 2586077199.

It is an arithmetic number, because the mean of its divisors is an integer number (2586077199).

Almost surely, 2^5172154397 is an apocalyptic number.

It is an amenable number.

5172154397 is a deficient number, since it is larger than the sum of its proper divisors (1).

5172154397 is an equidigital number, since it uses as much as digits as its factorization.

5172154397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 44.

The square root of 5172154397 is about 71917.6918219710. The cubic root of 5172154397 is about 1729.3802447768.

The spelling of 5172154397 in words is "five billion, one hundred seventy-two million, one hundred fifty-four thousand, three hundred ninety-seven".