71485775 has 12 divisors (see below), whose sum is σ = 89094000. Its totient is φ = 56897280.

The previous prime is 71485763. The next prime is 71485787. The reversal of 71485775 is 57758417.

It is an interprime number because it is at equal distance from previous prime (71485763) and next prime (71485787).

It is not a de Polignac number, because 71485775 - 2⁴ = 71485759 is a prime.

It is a super-2 number, since 2×71485775² = 10220432054701250, which contains 22 as substring.

It is a congruent number.

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, 2210 + ... + 12159.

It is an arithmetic number, because the mean of its divisors is an integer number (7424500).

Almost surely, 2^71485775 is an apocalyptic number.

71485775 is a deficient number, since it is larger than the sum of its proper divisors (17608225).

71485775 is a wasteful number, since it uses less digits than its factorization.

71485775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14578 (or 14573 counting only the distinct ones).

The product of its digits is 274400, while the sum is 44.

The square root of 71485775 is about 8454.9260789199. The cubic root of 71485775 is about 415.0239982251.

The spelling of 71485775 in words is "seventy-one million, four hundred eighty-five thousand, seven hundred seventy-five".