71145352 has 16 divisors (see below), whose sum is σ = 137997900. Its totient is φ = 34345920.

The previous prime is 71145317. The next prime is 71145379. The reversal of 71145352 is 25354117.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71132356 + 12996 = 8434^2 + 114^2 .

It is a super-2 number, since 2×71145352² = 10123322222407808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71145352.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153099 + ... + 153562.

Almost surely, 2^71145352 is an apocalyptic number.

It is an amenable number.

71145352 is a deficient number, since it is larger than the sum of its proper divisors (66852548).

71145352 is a wasteful number, since it uses less digits than its factorization.

71145352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306696 (or 306692 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 71145352 is about 8434.7704177411. The cubic root of 71145352 is about 414.3641532923.

Adding to 71145352 its reverse (25354117), we get a palindrome (96499469).

The spelling of 71145352 in words is "seventy-one million, one hundred forty-five thousand, three hundred fifty-two".