71137450 has 12 divisors (see below), whose sum is σ = 132315750. Its totient is φ = 28454960.

The previous prime is 71137411. The next prime is 71137453. The reversal of 71137450 is 5473117.

It can be written as a sum of positive squares in 3 ways, for example, as 60980481 + 10156969 = 7809^2 + 3187^2 .

It is not an unprimeable number, because it can be changed into a prime (71137453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711325 + ... + 711424.

Almost surely, 2^71137450 is an apocalyptic number.

71137450 is a deficient number, since it is larger than the sum of its proper divisors (61178300).

71137450 is a wasteful number, since it uses less digits than its factorization.

71137450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422761 (or 1422756 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 71137450 is about 8434.3019865310. The cubic root of 71137450 is about 414.3488118039.

The spelling of 71137450 in words is "seventy-one million, one hundred thirty-seven thousand, four hundred fifty".