13802857 has 2 divisors, whose sum is σ = 13802858. Its totient is φ = 13802856.

The previous prime is 13802851. The next prime is 13802863. The reversal of 13802857 is 75820831.

It is a balanced prime because it is at equal distance from previous prime (13802851) and next prime (13802863).

It can be written as a sum of positive squares in only one way, i.e., 10830681 + 2972176 = 3291^2 + 1724^2 .

It is an emirp because it is prime and its reverse (75820831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13802857 - 2³ = 13802849 is a prime.

It is a super-2 number, since 2×13802857² = 381037722724898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13802851) 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, 6901428 + 6901429.

It is an arithmetic number, because the mean of its divisors is an integer number (6901429).

Almost surely, 2^13802857 is an apocalyptic number.

It is an amenable number.

13802857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13802857 is an equidigital number, since it uses as much as digits as its factorization.

13802857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 13802857 is about 3715.2196435743. The cubic root of 13802857 is about 239.8775822444.

The spelling of 13802857 in words is "thirteen million, eight hundred two thousand, eight hundred fifty-seven".