170485381 has 8 divisors (see below), whose sum is σ = 191011104. Its totient is φ = 150797520.

The previous prime is 170485373. The next prime is 170485387. The reversal of 170485381 is 183584071.

It is the 5331-st star number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 170485381 - 2³ = 170485373 is a prime.

It is a super-2 number, since 2×170485381² = 58130530269430322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 170485381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170485387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209035 + ... + 209848.

It is an arithmetic number, because the mean of its divisors is an integer number (23876388).

Almost surely, 2^170485381 is an apocalyptic number.

170485381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

170485381 is a deficient number, since it is larger than the sum of its proper divisors (20525723).

170485381 is a wasteful number, since it uses less digits than its factorization.

170485381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418931.

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

The square root of 170485381 is about 13057.0050547589. The cubic root of 170485381 is about 554.4925491790.

The spelling of 170485381 in words is "one hundred seventy million, four hundred eighty-five thousand, three hundred eighty-one".