75171897 has 12 divisors (see below), whose sum is σ = 109957120. Its totient is φ = 49479768.

The previous prime is 75171881. The next prime is 75171919. The reversal of 75171897 is 79817157.

It is a happy number.

It is not a de Polignac number, because 75171897 - 2⁴ = 75171881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75171097) 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, 52153 + ... + 53574.

Almost surely, 2^75171897 is an apocalyptic number.

It is an amenable number.

75171897 is a deficient number, since it is larger than the sum of its proper divisors (34785223).

75171897 is a wasteful number, since it uses less digits than its factorization.

75171897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105812 (or 105809 counting only the distinct ones).

The product of its digits is 123480, while the sum is 45.

The square root of 75171897 is about 8670.1728356475. The cubic root of 75171897 is about 422.0382724735.

The spelling of 75171897 in words is "seventy-five million, one hundred seventy-one thousand, eight hundred ninety-seven".