71485037 has 4 divisors (see below), whose sum is σ = 76983900. Its totient is φ = 65986176.

The previous prime is 71485033. The next prime is 71485069. The reversal of 71485037 is 73058417.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35832196 + 35652841 = 5986^2 + 5971^2 .

It is a cyclic number.

It is not a de Polignac number, because 71485037 - 2² = 71485033 is a prime.

It is a super-2 number, since 2×71485037² = 10220221029782738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71484988 and 71485006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71485033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2749412 + ... + 2749437.

It is an arithmetic number, because the mean of its divisors is an integer number (19245975).

Almost surely, 2^71485037 is an apocalyptic number.

It is an amenable number.

71485037 is a deficient number, since it is larger than the sum of its proper divisors (5498863).

71485037 is a wasteful number, since it uses less digits than its factorization.

71485037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498862.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 71485037 is about 8454.8824356108. The cubic root of 71485037 is about 415.0225700213.

The spelling of 71485037 in words is "seventy-one million, four hundred eighty-five thousand, thirty-seven".