171164890 has 24 divisors (see below), whose sum is σ = 333622908. Its totient is φ = 63198720.

The previous prime is 171164887. The next prime is 171164899. The reversal of 171164890 is 98461171.

171164890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 13083²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 171164889 = 1^2 + 13083^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171164899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48951 + ... + 52330.

Almost surely, 2^171164890 is an apocalyptic number.

171164890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

171164890 is a deficient number, since it is larger than the sum of its proper divisors (162458018).

171164890 is a wasteful number, since it uses less digits than its factorization.

171164890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101314 (or 101301 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 171164890 is about 13083.0000382175. Note that the first 4 decimals coincide. The cubic root of 171164890 is about 555.2282587865.

The spelling of 171164890 in words is "one hundred seventy-one million, one hundred sixty-four thousand, eight hundred ninety".