2221879455 has 24 divisors (see below), whose sum is σ = 3868545408. Its totient is φ = 1179683136.

The previous prime is 2221879417. The next prime is 2221879459. The reversal of 2221879455 is 5549781222.

2221879455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221879455 - 2⁶ = 2221879391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2221879455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221879459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100672 + ... + 120741.

It is an arithmetic number, because the mean of its divisors is an integer number (161189392).

Almost surely, 2^2221879455 is an apocalyptic number.

2221879455 is a deficient number, since it is larger than the sum of its proper divisors (1646665953).

2221879455 is a wasteful number, since it uses less digits than its factorization.

2221879455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221647 (or 221644 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 2221879455 is about 47136.8163434910. The cubic root of 2221879455 is about 1304.8887825243. Note that the first 3 decimals are identical.

The spelling of 2221879455 in words is "two billion, two hundred twenty-one million, eight hundred seventy-nine thousand, four hundred fifty-five".