71152005 has 32 divisors (see below), whose sum is σ = 116363520. Its totient is φ = 37117440.

The previous prime is 71152001. The next prime is 71152013. The reversal of 71152005 is 50025117.

It is not a de Polignac number, because 71152005 - 2² = 71152001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71152001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198016 + ... + 198374.

It is an arithmetic number, because the mean of its divisors is an integer number (3636360).

Almost surely, 2^71152005 is an apocalyptic number.

It is an amenable number.

71152005 is a deficient number, since it is larger than the sum of its proper divisors (45211515).

71152005 is a wasteful number, since it uses less digits than its factorization.

71152005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 71152005 is about 8435.1647879576. The cubic root of 71152005 is about 414.3770690050.

It can be divided in two parts, 71 and 152005, that added together give a triangular number (152076 = T₅₅₁).

The spelling of 71152005 in words is "seventy-one million, one hundred fifty-two thousand, five".