171087345 has 72 divisors (see below), whose sum is σ = 351180648. Its totient is φ = 76538880.

The previous prime is 171087341. The next prime is 171087353. The reversal of 171087345 is 543780171.

171087345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30735936 + 140351409 = 5544^2 + 11847^2 .

It is not a de Polignac number, because 171087345 - 2² = 171087341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (171087341) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 69577 + ... + 71993.

It is an arithmetic number, because the mean of its divisors is an integer number (4877509).

Almost surely, 2^171087345 is an apocalyptic number.

171087345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

171087345 is an abundant number, since it is smaller than the sum of its proper divisors (180093303).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171087345 is a wasteful number, since it uses less digits than its factorization.

171087345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463 (or 2449 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 171087345 is about 13080.0361238033. The cubic root of 171087345 is about 555.1443987556.

The spelling of 171087345 in words is "one hundred seventy-one million, eighty-seven thousand, three hundred forty-five".