170556013 has 2 divisors, whose sum is σ = 170556014. Its totient is φ = 170556012.

The previous prime is 170556011. The next prime is 170556049. The reversal of 170556013 is 310655071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149744169 + 20811844 = 12237^2 + 4562^2 .

It is a cyclic number.

It is not a de Polignac number, because 170556013 - 2¹ = 170556011 is a prime.

Together with 170556011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170556011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85278006 + 85278007.

It is an arithmetic number, because the mean of its divisors is an integer number (85278007).

Almost surely, 2^170556013 is an apocalyptic number.

It is an amenable number.

170556013 is a deficient number, since it is larger than the sum of its proper divisors (1).

170556013 is an equidigital number, since it uses as much as digits as its factorization.

170556013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 170556013 is about 13059.7095296948. The cubic root of 170556013 is about 554.5691139263.

The spelling of 170556013 in words is "one hundred seventy million, five hundred fifty-six thousand, thirteen".