2220455251 has 4 divisors (see below), whose sum is σ = 2537663152. Its totient is φ = 1903247352.

The previous prime is 2220455249. The next prime is 2220455261. The reversal of 2220455251 is 1525540222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2220455251 - 2¹ = 2220455249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220455231) 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, 158603940 + ... + 158603953.

It is an arithmetic number, because the mean of its divisors is an integer number (634415788).

Almost surely, 2^2220455251 is an apocalyptic number.

2220455251 is a deficient number, since it is larger than the sum of its proper divisors (317207901).

2220455251 is an equidigital number, since it uses as much as digits as its factorization.

2220455251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317207900.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 2220455251 is about 47121.7067920932. The cubic root of 2220455251 is about 1304.6099157539.

Adding to 2220455251 its reverse (1525540222), we get a palindrome (3745995473).

The spelling of 2220455251 in words is "two billion, two hundred twenty million, four hundred fifty-five thousand, two hundred fifty-one".