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912053021 = 1173215559
BaseRepresentation
bin110110010111001…
…101001100011101
32100120012002112112
4312113031030131
53331441144041
6230300243405
731413215465
oct6627151435
92316162475
10912053021
11428914a30
12215540565
13116c56859
14891b6ba5
155510cdeb
hex365cd31d

912053021 has 12 divisors (see below), whose sum is σ = 1008848160. Its totient is φ = 817728480.

The previous prime is 912052993. The next prime is 912053039. The reversal of 912053021 is 120350219.

It is not a de Polignac number, because 912053021 - 210 = 912051997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912053081) 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, 50840 + ... + 66398.

It is an arithmetic number, because the mean of its divisors is an integer number (84070680).

Almost surely, 2912053021 is an apocalyptic number.

It is an amenable number.

912053021 is a deficient number, since it is larger than the sum of its proper divisors (96795139).

912053021 is a wasteful number, since it uses less digits than its factorization.

912053021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15716 (or 15643 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 912053021 is about 30200.2155787008. The cubic root of 912053021 is about 969.7803098321.

The spelling of 912053021 in words is "nine hundred twelve million, fifty-three thousand, twenty-one".

Divisors: 1 11 73 803 5329 15559 58619 171149 1135807 12493877 82913911 912053021