71117258 has 4 divisors (see below), whose sum is σ = 106675890. Its totient is φ = 35558628.

The previous prime is 71117201. The next prime is 71117269. The reversal of 71117258 is 85271117.

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

It can be written as a sum of positive squares in only one way, i.e., 53919649 + 17197609 = 7343^2 + 4147^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17779313 + ... + 17779316.

Almost surely, 2^71117258 is an apocalyptic number.

71117258 is a deficient number, since it is larger than the sum of its proper divisors (35558632).

71117258 is a wasteful number, since it uses less digits than its factorization.

71117258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35558631.

The product of its digits is 3920, while the sum is 32.

The square root of 71117258 is about 8433.1048849163. The cubic root of 71117258 is about 414.3096044997.

The spelling of 71117258 in words is "seventy-one million, one hundred seventeen thousand, two hundred fifty-eight".