71361001 has 4 divisors (see below), whose sum is σ = 72162900. Its totient is φ = 70559104.

The previous prime is 71360987. The next prime is 71361011. The reversal of 71361001 is 10016317.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49280400 + 22080601 = 7020^2 + 4699^2 .

It is a cyclic number.

It is not a de Polignac number, because 71361001 - 2⁹ = 71360489 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 71361001.

It is not an unprimeable number, because it can be changed into a prime (71361011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400816 + ... + 400993.

It is an arithmetic number, because the mean of its divisors is an integer number (18040725).

Almost surely, 2^71361001 is an apocalyptic number.

It is an amenable number.

71361001 is a deficient number, since it is larger than the sum of its proper divisors (801899).

71361001 is an equidigital number, since it uses as much as digits as its factorization.

71361001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801898.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 71361001 is about 8447.5440809741. The cubic root of 71361001 is about 414.7823913585.

Adding to 71361001 its reverse (10016317), we get a palindrome (81377318).

The spelling of 71361001 in words is "seventy-one million, three hundred sixty-one thousand, one".