71522130 has 16 divisors (see below), whose sum is σ = 171653184. Its totient is φ = 19072560.

The previous prime is 71522123. The next prime is 71522141. The reversal of 71522130 is 3122517.

It is a junction number, because it is equal to n+sod(n) for n = 71522097 and 71522106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1192006 + ... + 1192065.

It is an arithmetic number, because the mean of its divisors is an integer number (10728324).

Almost surely, 2^71522130 is an apocalyptic number.

71522130 is an abundant number, since it is smaller than the sum of its proper divisors (100131054).

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

71522130 is a wasteful number, since it uses less digits than its factorization.

71522130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384081.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 71522130 is about 8457.0757357375. The cubic root of 71522130 is about 415.0943415459.

Adding to 71522130 its reverse (3122517), we get a palindrome (74644647).

The spelling of 71522130 in words is "seventy-one million, five hundred twenty-two thousand, one hundred thirty".