2252221555 has 4 divisors (see below), whose sum is σ = 2702665872. Its totient is φ = 1801777240.

The previous prime is 2252221541. The next prime is 2252221567. The reversal of 2252221555 is 5551222522.

2252221555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5551222522 = 2 ⋅2775611261.

It is not a de Polignac number, because 2252221555 - 2¹⁷ = 2252090483 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225222151 + ... + 225222160.

It is an arithmetic number, because the mean of its divisors is an integer number (675666468).

Almost surely, 2^2252221555 is an apocalyptic number.

2252221555 is a deficient number, since it is larger than the sum of its proper divisors (450444317).

2252221555 is an equidigital number, since it uses as much as digits as its factorization.

2252221555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450444316.

The product of its digits is 20000, while the sum is 31.

The square root of 2252221555 is about 47457.5763709020. The cubic root of 2252221555 is about 1310.8018234768.

The spelling of 2252221555 in words is "two billion, two hundred fifty-two million, two hundred twenty-one thousand, five hundred fifty-five".