71297050 has 24 divisors (see below), whose sum is σ = 144669312. Its totient is φ = 25926000.

The previous prime is 71297047. The next prime is 71297059. The reversal of 71297050 is 5079217.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71297059) 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, 64266 + ... + 65365.

It is an arithmetic number, because the mean of its divisors is an integer number (6027888).

Almost surely, 2^71297050 is an apocalyptic number.

71297050 is an abundant number, since it is smaller than the sum of its proper divisors (73372262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71297050 is a wasteful number, since it uses less digits than its factorization.

71297050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129654 (or 129649 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 71297050 is about 8443.7580495891. The cubic root of 71297050 is about 414.6584502886.

The spelling of 71297050 in words is "seventy-one million, two hundred ninety-seven thousand, fifty".