171645045 has 32 divisors (see below), whose sum is σ = 322648704. Its totient is φ = 76819200.

The previous prime is 171645043. The next prime is 171645053. The reversal of 171645045 is 540546171.

171645045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 171645045 - 2¹ = 171645043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 171644997 and 171645015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171645041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37866 + ... + 42155.

It is an arithmetic number, because the mean of its divisors is an integer number (10082772).

Almost surely, 2^171645045 is an apocalyptic number.

171645045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

171645045 is a deficient number, since it is larger than the sum of its proper divisors (151003659).

171645045 is a wasteful number, since it uses less digits than its factorization.

171645045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80053.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 171645045 is about 13101.3375271382. The cubic root of 171645045 is about 555.7469530234.

The spelling of 171645045 in words is "one hundred seventy-one million, six hundred forty-five thousand, forty-five".