7041055921 has 3 divisors (see below), whose sum is σ = 7041139833. Its totient is φ = 7040972010.

The previous prime is 7041055919. The next prime is 7041055939. The reversal of 7041055921 is 1295501407.

The square root of 7041055921 is 83911.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1295501407 = 521 ⋅2486567.

It is not a de Polignac number, because 7041055921 - 2¹ = 7041055919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7041050921) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 41956 + ... + 125866.

It is an arithmetic number, because the mean of its divisors is an integer number (2347046611).

Almost surely, 2^7041055921 is an apocalyptic number.

7041055921 is the 83911-st square number.

7041055921 is the 41956-th centered octagonal number.

It is an amenable number.

7041055921 is a deficient number, since it is larger than the sum of its proper divisors (83912).

7041055921 is an frugal number, since it uses more digits than its factorization.

7041055921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167822 (or 83911 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

The cubic root of 7041055921 is about 1916.6637592630.

The spelling of 7041055921 in words is "seven billion, forty-one million, fifty-five thousand, nine hundred twenty-one".