71157250 has 32 divisors (see below), whose sum is σ = 133735680. Its totient is φ = 28350000.

The previous prime is 71157221. The next prime is 71157259. The reversal of 71157250 is 5275117.

It is not an unprimeable number, because it can be changed into a prime (71157259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94375 + ... + 95125.

It is an arithmetic number, because the mean of its divisors is an integer number (4179240).

Almost surely, 2^71157250 is an apocalyptic number.

71157250 is a deficient number, since it is larger than the sum of its proper divisors (62578430).

71157250 is a wasteful number, since it uses less digits than its factorization.

71157250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 71157250 is about 8435.4756830898. The cubic root of 71157250 is about 414.3872507482.

It can be divided in two parts, 7115 and 7250, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 71157250 in words is "seventy-one million, one hundred fifty-seven thousand, two hundred fifty".