102171967 has 4 divisors (see below), whose sum is σ = 102461760. Its totient is φ = 101882176.

The previous prime is 102171961. The next prime is 102171977. The reversal of 102171967 is 769171201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102171967 is a prime.

It is a super-2 number, since 2×102171967² = 20878221681298178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102171961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144367 + ... + 145072.

It is an arithmetic number, because the mean of its divisors is an integer number (25615440).

Almost surely, 2^102171967 is an apocalyptic number.

102171967 is a deficient number, since it is larger than the sum of its proper divisors (289793).

102171967 is an equidigital number, since it uses as much as digits as its factorization.

102171967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289792.

The product of its (nonzero) digits is 5292, while the sum is 34.

The square root of 102171967 is about 10108.0149881171. The cubic root of 102171967 is about 467.4953026495.

The spelling of 102171967 in words is "one hundred two million, one hundred seventy-one thousand, nine hundred sixty-seven".