71471252 has 6 divisors (see below), whose sum is σ = 125074698. Its totient is φ = 35735624.

The previous prime is 71471237. The next prime is 71471269. The reversal of 71471252 is 25217417.

It can be written as a sum of positive squares in only one way, i.e., 68492176 + 2979076 = 8276^2 + 1726^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8933903 + ... + 8933910.

It is an arithmetic number, because the mean of its divisors is an integer number (20845783).

Almost surely, 2^71471252 is an apocalyptic number.

It is an amenable number.

71471252 is a deficient number, since it is larger than the sum of its proper divisors (53603446).

71471252 is a wasteful number, since it uses less digits than its factorization.

71471252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17867817 (or 17867815 counting only the distinct ones).

The product of its digits is 3920, while the sum is 29.

The square root of 71471252 is about 8454.0671868634. The cubic root of 71471252 is about 414.9958909933.

Adding to 71471252 its reverse (25217417), we get a palindrome (96688669).

The spelling of 71471252 in words is "seventy-one million, four hundred seventy-one thousand, two hundred fifty-two".