71130529 has 4 divisors (see below), whose sum is σ = 71163184. Its totient is φ = 71097876.

The previous prime is 71130517. The next prime is 71130551. The reversal of 71130529 is 92503117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71130529 - 2⁷ = 71130401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71130497 and 71130506.

It is not an unprimeable number, because it can be changed into a prime (71130029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12807 + ... + 17500.

It is an arithmetic number, because the mean of its divisors is an integer number (17790796).

Almost surely, 2^71130529 is an apocalyptic number.

It is an amenable number.

71130529 is a deficient number, since it is larger than the sum of its proper divisors (32655).

71130529 is a wasteful number, since it uses less digits than its factorization.

71130529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32654.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 71130529 is about 8433.8916877086. The cubic root of 71130529 is about 414.3353739633.

The spelling of 71130529 in words is "seventy-one million, one hundred thirty thousand, five hundred twenty-nine".