71028001 has 4 divisors (see below), whose sum is σ = 77485104. Its totient is φ = 64570900.

The previous prime is 71027993. The next prime is 71028007. The reversal of 71028001 is 10082017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71028001 - 2³ = 71027993 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 71028001.

It is not an unprimeable number, because it can be changed into a prime (71028007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3228535 + ... + 3228556.

It is an arithmetic number, because the mean of its divisors is an integer number (19371276).

Almost surely, 2^71028001 is an apocalyptic number.

It is an amenable number.

71028001 is a deficient number, since it is larger than the sum of its proper divisors (6457103).

71028001 is a wasteful number, since it uses less digits than its factorization.

71028001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6457102.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 71028001 is about 8427.8111630482. The cubic root of 71028001 is about 414.1362030168.

The spelling of 71028001 in words is "seventy-one million, twenty-eight thousand, one".