Search a number
-
+
22249 = 191171
BaseRepresentation
bin101011011101001
31010112001
411123221
51202444
6251001
7121603
oct53351
933461
1022249
1115797
1210a61
13a186
148173
1568d4
hex56e9

22249 has 4 divisors (see below), whose sum is σ = 23440. Its totient is φ = 21060.

The previous prime is 22247. The next prime is 22259. The reversal of 22249 is 94222.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94222 = 247111.

It is a cyclic number.

It is not a de Polignac number, because 22249 - 21 = 22247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1171 = 22249 / (2 + 2 + 2 + 4 + 9).

It is an Ulam number.

It is a d-powerful number, because it can be written as 210 + 212 + 214 + 42 + 93 .

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22247) 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, 567 + ... + 604.

It is an arithmetic number, because the mean of its divisors is an integer number (5860).

222249 is an apocalyptic number.

It is an amenable number.

22249 is a deficient number, since it is larger than the sum of its proper divisors (1191).

22249 is a wasteful number, since it uses less digits than its factorization.

22249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190.

The product of its digits is 288, while the sum is 19.

The square root of 22249 is about 149.1609868565. The cubic root of 22249 is about 28.1257102701.

It can be divided in two parts, 222 and 49, that multiplied together give a triangular number (10878 = T147).

The spelling of 22249 in words is "twenty-two thousand, two hundred forty-nine".

Divisors: 1 19 1171 22249