171087146 has 4 divisors (see below), whose sum is σ = 256630722. Its totient is φ = 85543572.

The previous prime is 171087143. The next prime is 171087151. The reversal of 171087146 is 641780171.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 168870025 + 2217121 = 12995^2 + 1489^2 .

It is not an unprimeable number, because it can be changed into a prime (171087143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42771785 + ... + 42771788.

Almost surely, 2^171087146 is an apocalyptic number.

171087146 is a deficient number, since it is larger than the sum of its proper divisors (85543576).

171087146 is an equidigital number, since it uses as much as digits as its factorization.

171087146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85543575.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 171087146 is about 13080.0285167885. The cubic root of 171087146 is about 555.1441835170.

The spelling of 171087146 in words is "one hundred seventy-one million, eighty-seven thousand, one hundred forty-six".