71013533 has 2 divisors, whose sum is σ = 71013534. Its totient is φ = 71013532.

The previous prime is 71013479. The next prime is 71013541. The reversal of 71013533 is 33531017.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70190884 + 822649 = 8378^2 + 907^2 .

It is a cyclic number.

It is not a de Polignac number, because 71013533 - 2¹⁴ = 70997149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71013499 and 71013508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71013133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35506766 + 35506767.

It is an arithmetic number, because the mean of its divisors is an integer number (35506767).

Almost surely, 2^71013533 is an apocalyptic number.

It is an amenable number.

71013533 is a deficient number, since it is larger than the sum of its proper divisors (1).

71013533 is an equidigital number, since it uses as much as digits as its factorization.

71013533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 71013533 is about 8426.9527707232. The cubic root of 71013533 is about 414.1080820440.

The spelling of 71013533 in words is "seventy-one million, thirteen thousand, five hundred thirty-three".