5221777021 has 4 divisors (see below), whose sum is σ = 5244780672. Its totient is φ = 5198773372.

The previous prime is 5221777019. The next prime is 5221777027. The reversal of 5221777021 is 1207771225.

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 5221777021 - 2¹ = 5221777019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221777027) 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, 11501485 + ... + 11501938.

It is an arithmetic number, because the mean of its divisors is an integer number (1311195168).

Almost surely, 2^5221777021 is an apocalyptic number.

It is an amenable number.

5221777021 is a deficient number, since it is larger than the sum of its proper divisors (23003651).

5221777021 is a wasteful number, since it uses less digits than its factorization.

5221777021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23003650.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 5221777021 is about 72261.8642231156. The cubic root of 5221777021 is about 1734.8933176936.

The spelling of 5221777021 in words is "five billion, two hundred twenty-one million, seven hundred seventy-seven thousand, twenty-one".