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575000021 = 19475312149
BaseRepresentation
bin100010010001011…
…100110111010101
31111001222000202002
4202101130313111
52134200000041
6133020125045
720151263621
oct4221346725
91431860662
10575000021
11275633032
12140696785
13921846cb
145651a181
153573059b
hex2245cdd5

575000021 has 16 divisors (see below), whose sum is σ = 629856000. Its totient is φ = 523044288.

The previous prime is 575000011. The next prime is 575000029. The reversal of 575000021 is 120000575.

575000021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 575000021 - 210 = 574998997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 574999957 and 575000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (575000029) 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, 41255 + ... + 53403.

It is an arithmetic number, because the mean of its divisors is an integer number (39366000).

Almost surely, 2575000021 is an apocalyptic number.

It is an amenable number.

575000021 is a deficient number, since it is larger than the sum of its proper divisors (54855979).

575000021 is a wasteful number, since it uses less digits than its factorization.

575000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12268.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 575000021 is about 23979.1580544439. The cubic root of 575000021 is about 831.5517595436.

Adding to 575000021 its reverse (120000575), we get a palindrome (695000596).

The spelling of 575000021 in words is "five hundred seventy-five million, twenty-one", and thus it is an aban number.

Divisors: 1 19 47 53 893 1007 2491 12149 47329 230831 571003 643897 10849057 12234043 30263159 575000021