71004155 has 16 divisors (see below), whose sum is σ = 90556704. Its totient is φ = 53260800.

The previous prime is 71004139. The next prime is 71004161. The reversal of 71004155 is 55140017.

It is not a de Polignac number, because 71004155 - 2⁴ = 71004139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71004155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23480 + ... + 26330.

It is an arithmetic number, because the mean of its divisors is an integer number (5659794).

Almost surely, 2^71004155 is an apocalyptic number.

71004155 is a deficient number, since it is larger than the sum of its proper divisors (19552549).

71004155 is a wasteful number, since it uses less digits than its factorization.

71004155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 71004155 is about 8426.3963234588. The cubic root of 71004155 is about 414.0898522954.

The spelling of 71004155 in words is "seventy-one million, four thousand, one hundred fifty-five".