71525238 has 32 divisors (see below), whose sum is σ = 147087360. Its totient is φ = 23173440.

The previous prime is 71525231. The next prime is 71525261. The reversal of 71525238 is 83252517.

It is a junction number, because it is equal to n+sod(n) for n = 71525199 and 71525208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71525231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 117531 + ... + 118137.

It is an arithmetic number, because the mean of its divisors is an integer number (4596480).

Almost surely, 2^71525238 is an apocalyptic number.

71525238 is an abundant number, since it is smaller than the sum of its proper divisors (75562122).

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

71525238 is a wasteful number, since it uses less digits than its factorization.

71525238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132.

The product of its digits is 16800, while the sum is 33.

The square root of 71525238 is about 8457.2594851997. The cubic root of 71525238 is about 415.1003541117.

The spelling of 71525238 in words is "seventy-one million, five hundred twenty-five thousand, two hundred thirty-eight".