71533001 has 2 divisors, whose sum is σ = 71533002. Its totient is φ = 71533000.

The previous prime is 71532917. The next prime is 71533057. The reversal of 71533001 is 10033517.

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., 59290000 + 12243001 = 7700^2 + 3499^2 .

It is a cyclic number.

It is not a de Polignac number, because 71533001 - 2¹⁴ = 71516617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71533601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35766500 + 35766501.

It is an arithmetic number, because the mean of its divisors is an integer number (35766501).

Almost surely, 2^71533001 is an apocalyptic number.

It is an amenable number.

71533001 is a deficient number, since it is larger than the sum of its proper divisors (1).

71533001 is an equidigital number, since it uses as much as digits as its factorization.

71533001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 71533001 is about 8457.7184275666. The cubic root of 71533001 is about 415.1153712234.

Adding to 71533001 its reverse (10033517), we get a palindrome (81566518).

The spelling of 71533001 in words is "seventy-one million, five hundred thirty-three thousand, one".