170252149 has 2 divisors, whose sum is σ = 170252150. Its totient is φ = 170252148.

The previous prime is 170252129. The next prime is 170252171. The reversal of 170252149 is 941252071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99860049 + 70392100 = 9993^2 + 8390^2 .

It is an emirp because it is prime and its reverse (941252071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170252149 - 2⁹ = 170251637 is a prime.

It is equal to p_9516460 and since 170252149 and 9516460 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 170252149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170252129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85126074 + 85126075.

It is an arithmetic number, because the mean of its divisors is an integer number (85126075).

Almost surely, 2^170252149 is an apocalyptic number.

It is an amenable number.

170252149 is a deficient number, since it is larger than the sum of its proper divisors (1).

170252149 is an equidigital number, since it uses as much as digits as its factorization.

170252149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 170252149 is about 13048.0707002990. The cubic root of 170252149 is about 554.2395765102.

The spelling of 170252149 in words is "one hundred seventy million, two hundred fifty-two thousand, one hundred forty-nine".