71381875 has 20 divisors (see below), whose sum is σ = 89833744. Its totient is φ = 56700000.

The previous prime is 71381873. The next prime is 71381881. The reversal of 71381875 is 57818317.

It is a happy number.

It is not a de Polignac number, because 71381875 - 2¹ = 71381873 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71381873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 112810 + ... + 113440.

Almost surely, 2^71381875 is an apocalyptic number.

71381875 is a deficient number, since it is larger than the sum of its proper divisors (18451869).

71381875 is an equidigital number, since it uses as much as digits as its factorization.

71381875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 817 counting only the distinct ones).

The product of its digits is 47040, while the sum is 40.

The square root of 71381875 is about 8448.7794976553. The cubic root of 71381875 is about 414.8228304567.

The spelling of 71381875 in words is "seventy-one million, three hundred eighty-one thousand, eight hundred seventy-five".