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20152053 = 3210321739
BaseRepresentation
bin100110011011…
…1111011110101
31101220211102100
41030313323311
520124331203
61555532313
7333201225
oct114677365
941824370
1020152053
1110414599
1268ba099
1342376bc
142968085
151b80ea3
hex1337ef5

20152053 has 12 divisors (see below), whose sum is σ = 29392480. Its totient is φ = 13303656.

The previous prime is 20152051. The next prime is 20152063. The reversal of 20152053 is 35025102.

It is a happy number.

It is not a de Polignac number, because 20152053 - 21 = 20152051 is a prime.

It is a super-2 number, since 2×201520532 = 812210480229618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9943 + ... + 11796.

Almost surely, 220152053 is an apocalyptic number.

It is an amenable number.

20152053 is a deficient number, since it is larger than the sum of its proper divisors (9240427).

20152053 is a wasteful number, since it uses less digits than its factorization.

20152053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21848 (or 21845 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20152053 is about 4489.1038081114. The cubic root of 20152053 is about 272.1279179539.

Adding to 20152053 its reverse (35025102), we get a palindrome (55177155).

The spelling of 20152053 in words is "twenty million, one hundred fifty-two thousand, fifty-three".

Divisors: 1 3 9 103 309 927 21739 65217 195651 2239117 6717351 20152053