13172477 has 2 divisors, whose sum is σ = 13172478. Its totient is φ = 13172476.

The previous prime is 13172473. The next prime is 13172479. The reversal of 13172477 is 77427131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10797796 + 2374681 = 3286^2 + 1541^2 .

It is a cyclic number.

It is not a de Polignac number, because 13172477 - 2² = 13172473 is a prime.

Together with 13172479, 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 (13172473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6586238 + 6586239.

It is an arithmetic number, because the mean of its divisors is an integer number (6586239).

Almost surely, 2^13172477 is an apocalyptic number.

It is an amenable number.

13172477 is a deficient number, since it is larger than the sum of its proper divisors (1).

13172477 is an equidigital number, since it uses as much as digits as its factorization.

13172477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8232, while the sum is 32.

The square root of 13172477 is about 3629.3907202174. The cubic root of 13172477 is about 236.1687782906.

The spelling of 13172477 in words is "thirteen million, one hundred seventy-two thousand, four hundred seventy-seven".