2517112021 has 4 divisors (see below), whose sum is σ = 2665177452. Its totient is φ = 2369046592.

The previous prime is 2517111997. The next prime is 2517112063. The reversal of 2517112021 is 1202117152.

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 854919121 + 1662192900 = 29239^2 + 40770^2 .

It is a cyclic number.

It is not a de Polignac number, because 2517112021 - 2¹³ = 2517103829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2517111983 and 2517112001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2517112321) 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, 74032690 + ... + 74032723.

It is an arithmetic number, because the mean of its divisors is an integer number (666294363).

Almost surely, 2^2517112021 is an apocalyptic number.

It is an amenable number.

2517112021 is a deficient number, since it is larger than the sum of its proper divisors (148065431).

2517112021 is a wasteful number, since it uses less digits than its factorization.

2517112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148065430.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 2517112021 is about 50170.8283866232. The cubic root of 2517112021 is about 1360.2983812222.

Adding to 2517112021 its reverse (1202117152), we get a palindrome (3719229173).

The spelling of 2517112021 in words is "two billion, five hundred seventeen million, one hundred twelve thousand, twenty-one".