71525228 has 12 divisors (see below), whose sum is σ = 127291080. Its totient is φ = 35156352.

The previous prime is 71525219. The next prime is 71525231. The reversal of 71525228 is 82252517.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71525194 and 71525203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151301 + ... + 151772.

It is an arithmetic number, because the mean of its divisors is an integer number (10607590).

Almost surely, 2^71525228 is an apocalyptic number.

It is an amenable number.

71525228 is a deficient number, since it is larger than the sum of its proper divisors (55765852).

71525228 is a wasteful number, since it uses less digits than its factorization.

71525228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303136 (or 303134 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 71525228 is about 8457.2588939916. The cubic root of 71525228 is about 415.1003347665.

The spelling of 71525228 in words is "seventy-one million, five hundred twenty-five thousand, two hundred twenty-eight".