71020523 has 8 divisors (see below), whose sum is σ = 81507840. Its totient is φ = 60618600.

The previous prime is 71020493. The next prime is 71020529. The reversal of 71020523 is 32502017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71020523 - 2⁸ = 71020267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71020495 and 71020504.

It is not an unprimeable number, because it can be changed into a prime (71020529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19553 + ... + 22898.

It is an arithmetic number, because the mean of its divisors is an integer number (10188480).

Almost surely, 2^71020523 is an apocalyptic number.

71020523 is a deficient number, since it is larger than the sum of its proper divisors (10487317).

71020523 is a wasteful number, since it uses less digits than its factorization.

71020523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42697.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 71020523 is about 8427.3675011833. The cubic root of 71020523 is about 414.1216687525.

The spelling of 71020523 in words is "seventy-one million, twenty thousand, five hundred twenty-three".