71502085 has 16 divisors (see below), whose sum is σ = 91742976. Its totient is φ = 53307648.

The previous prime is 71502071. The next prime is 71502091. The reversal of 71502085 is 58020517.

It is a de Polignac number, because none of the positive numbers 2^k-71502085 is a prime.

It is a super-2 number, since 2×71502085² = 10225096318694450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4672 + ... + 12838.

It is an arithmetic number, because the mean of its divisors is an integer number (5733936).

Almost surely, 2^71502085 is an apocalyptic number.

It is an amenable number.

71502085 is a deficient number, since it is larger than the sum of its proper divisors (20240891).

71502085 is a wasteful number, since it uses less digits than its factorization.

71502085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8292.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 71502085 is about 8455.8905503797. The cubic root of 71502085 is about 415.0555594072.

The spelling of 71502085 in words is "seventy-one million, five hundred two thousand, eighty-five".