20755171 has 8 divisors (see below), whose sum is σ = 21241440. Its totient is φ = 20272512.

The previous prime is 20755159. The next prime is 20755199. The reversal of 20755171 is 17155702.

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 20755171 - 2⁵ = 20755139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20755121) 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, 13195 + ... + 14683.

It is an arithmetic number, because the mean of its divisors is an integer number (2655180).

Almost surely, 2^20755171 is an apocalyptic number.

20755171 is a deficient number, since it is larger than the sum of its proper divisors (486269).

20755171 is a wasteful number, since it uses less digits than its factorization.

20755171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 20755171 is about 4555.7843452034. The cubic root of 20755171 is about 274.8160577082.

The spelling of 20755171 in words is "twenty million, seven hundred fifty-five thousand, one hundred seventy-one".