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2228215553 = 4794651807
BaseRepresentation
bin1000010011001111…
…1101111100000001
312202021210002002222
42010303331330001
514030410344203
61005034220425
7106134343154
oct20463757401
95667702088
102228215553
11a43851363
12522284715
13296830355
14171d03c9b
15d0942038
hex84cfdf01

2228215553 has 4 divisors (see below), whose sum is σ = 2232867840. Its totient is φ = 2223563268.

The previous prime is 2228215547. The next prime is 2228215579. The reversal of 2228215553 is 3555128222.

2228215553 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 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 2228215553 - 230 = 1154473729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2228215513) 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, 2325425 + ... + 2326382.

It is an arithmetic number, because the mean of its divisors is an integer number (558216960).

Almost surely, 22228215553 is an apocalyptic number.

It is an amenable number.

2228215553 is a deficient number, since it is larger than the sum of its proper divisors (4652287).

2228215553 is an equidigital number, since it uses as much as digits as its factorization.

2228215553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4652286.

The product of its digits is 48000, while the sum is 35.

The square root of 2228215553 is about 47203.9781480332. The cubic root of 2228215553 is about 1306.1279821375.

It can be divided in two parts, 2228 and 215553, that multiplied together give a palindrome (480252084).

The spelling of 2228215553 in words is "two billion, two hundred twenty-eight million, two hundred fifteen thousand, five hundred fifty-three".

Divisors: 1 479 4651807 2228215553