71087125 has 16 divisors (see below), whose sum is σ = 88963056. Its totient is φ = 56712000.

The previous prime is 71087119. The next prime is 71087141. The reversal of 71087125 is 52178017.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 37051569 + 34035556 = 6087^2 + 5834^2 .

It is a de Polignac number, because none of the positive numbers 2^k-71087125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69115 + ... + 70135.

It is an arithmetic number, because the mean of its divisors is an integer number (5560191).

Almost surely, 2^71087125 is an apocalyptic number.

It is an amenable number.

71087125 is a deficient number, since it is larger than the sum of its proper divisors (17875931).

71087125 is a wasteful number, since it uses less digits than its factorization.

71087125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593 (or 1583 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 71087125 is about 8431.3181057294. The cubic root of 71087125 is about 414.2510807071.

The spelling of 71087125 in words is "seventy-one million, eighty-seven thousand, one hundred twenty-five".