13148857 has 2 divisors, whose sum is σ = 13148858. Its totient is φ = 13148856.

The previous prime is 13148831. The next prime is 13148869. The reversal of 13148857 is 75884131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9369721 + 3779136 = 3061^2 + 1944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13148857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13148827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6574428 + 6574429.

It is an arithmetic number, because the mean of its divisors is an integer number (6574429).

Almost surely, 2^13148857 is an apocalyptic number.

It is an amenable number.

13148857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13148857 is an equidigital number, since it uses as much as digits as its factorization.

13148857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 13148857 is about 3626.1352705049. The cubic root of 13148857 is about 236.0275331757.

It can be divided in two parts, 1314885 and 7, that multiplied together give a triangular number (9204195 = T₄₂₉₀).

The spelling of 13148857 in words is "thirteen million, one hundred forty-eight thousand, eight hundred fifty-seven".