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52105311553 = 64403809051
BaseRepresentation
bin110000100001101101…
…111111010101000001
311222111022100002010211
4300201231333111001
51323202424432203
635534205354121
73523134561211
oct604155772501
9158438302124
1052105311553
11201090a9859
12a121b68941
134bb4c9a3c9
1427441a0241
15154e60ac6d
hexc21b7f541

52105311553 has 4 divisors (see below), whose sum is σ = 52106185008. Its totient is φ = 52104438100.

The previous prime is 52105311551. The next prime is 52105311649. The reversal of 52105311553 is 35511350125.

52105311553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 52105311553 - 21 = 52105311551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52105311551) 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, 340123 + ... + 468928.

It is an arithmetic number, because the mean of its divisors is an integer number (13026546252).

Almost surely, 252105311553 is an apocalyptic number.

It is an amenable number.

52105311553 is a deficient number, since it is larger than the sum of its proper divisors (873455).

52105311553 is an equidigital number, since it uses as much as digits as its factorization.

52105311553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873454.

The product of its (nonzero) digits is 11250, while the sum is 31.

Adding to 52105311553 its reverse (35511350125), we get a palindrome (87616661678).

The spelling of 52105311553 in words is "fifty-two billion, one hundred five million, three hundred eleven thousand, five hundred fifty-three".

Divisors: 1 64403 809051 52105311553