71485515 has 12 divisors (see below), whose sum is σ = 123908304. Its totient is φ = 38125584.

The previous prime is 71485507. The next prime is 71485529. The reversal of 71485515 is 51558417.

It is not a de Polignac number, because 71485515 - 2³ = 71485507 is a prime.

It is a super-2 number, since 2×71485515² = 10220357709630450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71485515.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 794239 + ... + 794328.

It is an arithmetic number, because the mean of its divisors is an integer number (10325692).

Almost surely, 2^71485515 is an apocalyptic number.

71485515 is a deficient number, since it is larger than the sum of its proper divisors (52422789).

71485515 is a wasteful number, since it uses less digits than its factorization.

71485515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588578 (or 1588575 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 71485515 is about 8454.9107032541. The cubic root of 71485515 is about 415.0234950650.

The spelling of 71485515 in words is "seventy-one million, four hundred eighty-five thousand, five hundred fifteen".