71501933 has 2 divisors, whose sum is σ = 71501934. Its totient is φ = 71501932.

The previous prime is 71501897. The next prime is 71501939. The reversal of 71501933 is 33910517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62758084 + 8743849 = 7922^2 + 2957^2 .

It is an emirp because it is prime and its reverse (33910517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71501933 - 2¹⁸ = 71239789 is a prime.

It is a super-2 number, since 2×71501933² = 10225052845472978, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71501896 and 71501905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71501939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35750966 + 35750967.

It is an arithmetic number, because the mean of its divisors is an integer number (35750967).

Almost surely, 2^71501933 is an apocalyptic number.

It is an amenable number.

71501933 is a deficient number, since it is larger than the sum of its proper divisors (1).

71501933 is an equidigital number, since it uses as much as digits as its factorization.

71501933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 71501933 is about 8455.8815625575. The cubic root of 71501933 is about 415.0552652969.

The spelling of 71501933 in words is "seventy-one million, five hundred one thousand, nine hundred thirty-three".