71272485 has 12 divisors (see below), whose sum is σ = 123539052. Its totient is φ = 38011968.

The previous prime is 71272463. The next prime is 71272489. The reversal of 71272485 is 58427217.

It can be written as a sum of positive squares in 2 ways, for example, as 13527684 + 57744801 = 3678^2 + 7599^2 .

It is not a de Polignac number, because 71272485 - 2¹⁰ = 71271461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71272489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 791872 + ... + 791961.

It is an arithmetic number, because the mean of its divisors is an integer number (10294921).

Almost surely, 2^71272485 is an apocalyptic number.

It is an amenable number.

71272485 is a deficient number, since it is larger than the sum of its proper divisors (52266567).

71272485 is a wasteful number, since it uses less digits than its factorization.

71272485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583844 (or 1583841 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 71272485 is about 8442.3032994557. The cubic root of 71272485 is about 414.6108220679.

The spelling of 71272485 in words is "seventy-one million, two hundred seventy-two thousand, four hundred eighty-five".