71025487 has 4 divisors (see below), whose sum is σ = 76489000. Its totient is φ = 65561976.

The previous prime is 71025481. The next prime is 71025491. The reversal of 71025487 is 78452017.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 71025487 - 2²³ = 62636879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71025481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2731737 + ... + 2731762.

It is an arithmetic number, because the mean of its divisors is an integer number (19122250).

Almost surely, 2^71025487 is an apocalyptic number.

71025487 is a deficient number, since it is larger than the sum of its proper divisors (5463513).

71025487 is a wasteful number, since it uses less digits than its factorization.

71025487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5463512.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 71025487 is about 8427.6620126818. The cubic root of 71025487 is about 414.1313169123.

The spelling of 71025487 in words is "seventy-one million, twenty-five thousand, four hundred eighty-seven".