170161901 has 16 divisors (see below), whose sum is σ = 210607488. Its totient is φ = 133876800.

The previous prime is 170161897. The next prime is 170161903. The reversal of 170161901 is 109161071.

It is a cyclic number.

It is not a de Polignac number, because 170161901 - 2² = 170161897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170161903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11306 + ... + 21636.

It is an arithmetic number, because the mean of its divisors is an integer number (13162968).

Almost surely, 2^170161901 is an apocalyptic number.

It is an amenable number.

170161901 is a deficient number, since it is larger than the sum of its proper divisors (40445587).

170161901 is a wasteful number, since it uses less digits than its factorization.

170161901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10532.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 170161901 is about 13044.6119528332. The cubic root of 170161901 is about 554.1416279590.

The spelling of 170161901 in words is "one hundred seventy million, one hundred sixty-one thousand, nine hundred one".