2511004421 has 4 divisors (see below), whose sum is σ = 2511139392. Its totient is φ = 2510869452.

The previous prime is 2511004409. The next prime is 2511004439. The reversal of 2511004421 is 1244001152.

It is a happy number.

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 2511004421 - 2⁶ = 2511004357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2511004393 and 2511004402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2511004021) 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, 34061 + ... + 78626.

It is an arithmetic number, because the mean of its divisors is an integer number (627784848).

Almost surely, 2^2511004421 is an apocalyptic number.

It is an amenable number.

2511004421 is a deficient number, since it is larger than the sum of its proper divisors (134971).

2511004421 is a wasteful number, since it uses less digits than its factorization.

2511004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134970.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2511004421 is about 50109.9233785086. The cubic root of 2511004421 is about 1359.1972665158.

Adding to 2511004421 its reverse (1244001152), we get a palindrome (3755005573).

The spelling of 2511004421 in words is "two billion, five hundred eleven million, four thousand, four hundred twenty-one".