78275171 has 8 divisors (see below), whose sum is σ = 84366240. Its totient is φ = 72194112.

The previous prime is 78275167. The next prime is 78275201. The reversal of 78275171 is 17157287.

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 78275171 - 2² = 78275167 is a prime.

It is a super-2 number, since 2×78275171² = 12254004790158482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78275111) 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, 25031 + ... + 27983.

It is an arithmetic number, because the mean of its divisors is an integer number (10545780).

Almost surely, 2^78275171 is an apocalyptic number.

78275171 is a deficient number, since it is larger than the sum of its proper divisors (6091069).

78275171 is a wasteful number, since it uses less digits than its factorization.

78275171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005.

The product of its digits is 27440, while the sum is 38.

The square root of 78275171 is about 8847.3256411189. The cubic root of 78275171 is about 427.7677194064.

The spelling of 78275171 in words is "seventy-eight million, two hundred seventy-five thousand, one hundred seventy-one".