71201523 has 4 divisors (see below), whose sum is σ = 94935368. Its totient is φ = 47467680.

The previous prime is 71201521. The next prime is 71201527. The reversal of 71201523 is 32510217.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 71201523 - 2¹ = 71201521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71201523.

It is not an unprimeable number, because it can be changed into a prime (71201521) 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, 11866918 + ... + 11866923.

It is an arithmetic number, because the mean of its divisors is an integer number (23733842).

Almost surely, 2^71201523 is an apocalyptic number.

71201523 is a deficient number, since it is larger than the sum of its proper divisors (23733845).

71201523 is a wasteful number, since it uses less digits than its factorization.

71201523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23733844.

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

The square root of 71201523 is about 8438.0994898140. The cubic root of 71201523 is about 414.4731748255.

The spelling of 71201523 in words is "seventy-one million, two hundred one thousand, five hundred twenty-three".