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22155133 = 7111322133
BaseRepresentation
bin101010010000…
…0111101111101
31112200121010111
41110200331331
521132431013
62110510021
7356213140
oct124407575
945617114
1022155133
1111562530
127505311
134789360
142d2a057
151e2973d
hex1520f7d

22155133 has 16 divisors (see below), whose sum is σ = 29748096. Its totient is φ = 15935040.

The previous prime is 22155127. The next prime is 22155137. The reversal of 22155133 is 33155122.

It is not a de Polignac number, because 22155133 - 221 = 20057981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10066 + ... + 12067.

It is an arithmetic number, because the mean of its divisors is an integer number (1859256).

Almost surely, 222155133 is an apocalyptic number.

It is an amenable number.

22155133 is a deficient number, since it is larger than the sum of its proper divisors (7592963).

22155133 is a wasteful number, since it uses less digits than its factorization.

22155133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22164.

The product of its digits is 900, while the sum is 22.

The square root of 22155133 is about 4706.9239424490. The cubic root of 22155133 is about 280.8610103617.

The spelling of 22155133 in words is "twenty-two million, one hundred fifty-five thousand, one hundred thirty-three".

Divisors: 1 7 11 13 77 91 143 1001 22133 154931 243463 287729 1704241 2014103 3165019 22155133