7111001 has 4 divisors (see below), whose sum is σ = 7156452. Its totient is φ = 7065552.

The previous prime is 7110991. The next prime is 7111007. The reversal of 7111001 is 1001117.

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 3312400 + 3798601 = 1820^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 7111001 - 2¹⁸ = 6848857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7111007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22490 + ... + 22803.

It is an arithmetic number, because the mean of its divisors is an integer number (1789113).

Almost surely, 2^7111001 is an apocalyptic number.

It is an amenable number.

7111001 is a deficient number, since it is larger than the sum of its proper divisors (45451).

7111001 is a wasteful number, since it uses less digits than its factorization.

7111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45450.

The product of its (nonzero) digits is 7, while the sum is 11.

The square root of 7111001 is about 2666.6460207534. The cubic root of 7111001 is about 192.2989501544.

Adding to 7111001 its reverse (1001117), we get a palindrome (8112118).

The spelling of 7111001 in words is "seven million, one hundred eleven thousand, one".