71525268 has 30 divisors (see below), whose sum is σ = 186982026. Its totient is φ = 23841648.

The previous prime is 71525263. The next prime is 71525269. The reversal of 71525268 is 86252517.

It is a happy number.

71525268 is a `hidden beast` number, since 71 + 525 + 2 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 66781584 + 4743684 = 8172^2 + 2178^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71525261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 110055 + ... + 110702.

Almost surely, 2^71525268 is an apocalyptic number.

It is an amenable number.

71525268 is an abundant number, since it is smaller than the sum of its proper divisors (115456758).

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

71525268 is a wasteful number, since it uses less digits than its factorization.

71525268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220773 (or 220762 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 71525268 is about 8457.2612588237. The cubic root of 71525268 is about 415.1004121472.

The spelling of 71525268 in words is "seventy-one million, five hundred twenty-five thousand, two hundred sixty-eight".