71523523 has 2 divisors, whose sum is σ = 71523524. Its totient is φ = 71523522.

The previous prime is 71523503. The next prime is 71523527. The reversal of 71523523 is 32532517.

It is a strong prime.

It is an emirp because it is prime and its reverse (32532517) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71523523 is a prime.

It is a super-2 number, since 2×71523523² = 10231228684663058, which contains 22 as substring.

It is equal to p_4202398 and since 71523523 and 4202398 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 71523491 and 71523500.

It is not a weakly prime, because it can be changed into another prime (71523527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35761761 + 35761762.

It is an arithmetic number, because the mean of its divisors is an integer number (35761762).

Almost surely, 2^71523523 is an apocalyptic number.

71523523 is a deficient number, since it is larger than the sum of its proper divisors (1).

71523523 is an equidigital number, since it uses as much as digits as its factorization.

71523523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 28.

The square root of 71523523 is about 8457.1580924091. The cubic root of 71523523 is about 415.0970363886.

The spelling of 71523523 in words is "seventy-one million, five hundred twenty-three thousand, five hundred twenty-three".