71158473 has 32 divisors (see below), whose sum is σ = 108017280. Its totient is φ = 46287360.

The previous prime is 71158469. The next prime is 71158499. The reversal of 71158473 is 37485117.

71158473 is a `hidden beast` number, since 7 + 1 + 1 + 584 + 73 = 666.

It is not a de Polignac number, because 71158473 - 2² = 71158469 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (23520) is a multiple of the sum of its prime divisors (480).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71158453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253093 + ... + 253373.

It is an arithmetic number, because the mean of its divisors is an integer number (3375540).

Almost surely, 2^71158473 is an apocalyptic number.

It is an amenable number.

71158473 is a deficient number, since it is larger than the sum of its proper divisors (36858807).

71158473 is a wasteful number, since it uses less digits than its factorization.

71158473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 480 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 71158473 is about 8435.5481742445. The cubic root of 71158473 is about 414.3896247986.

It can be divided in two parts, 71158 and 473, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 71158473 in words is "seventy-one million, one hundred fifty-eight thousand, four hundred seventy-three".