71055487 has 4 divisors (see below), whose sum is σ = 74144880. Its totient is φ = 67966096.

The previous prime is 71055469. The next prime is 71055511. The reversal of 71055487 is 78455017.

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 71055487 - 2¹¹ = 71053439 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 (71055407) 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, 1544662 + ... + 1544707.

It is an arithmetic number, because the mean of its divisors is an integer number (18536220).

Almost surely, 2^71055487 is an apocalyptic number.

71055487 is a deficient number, since it is larger than the sum of its proper divisors (3089393).

71055487 is a wasteful number, since it uses less digits than its factorization.

71055487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089392.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 71055487 is about 8429.4416778337. The cubic root of 71055487 is about 414.1896161287.

The spelling of 71055487 in words is "seventy-one million, fifty-five thousand, four hundred eighty-seven".