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53055255881 = 167317696143
BaseRepresentation
bin110001011010010101…
…101111010101001001
312001221111211020210002
4301122111233111021
51332124121142011
640212342132345
73555521143205
oct613225572511
9161844736702
1053055255881
1120556344011
12a3481210b5
135006a2ca44
1427d43dbb05
1515a7c00c3b
hexc5a56f549

53055255881 has 4 divisors (see below), whose sum is σ = 53372952192. Its totient is φ = 52737559572.

The previous prime is 53055255811. The next prime is 53055255887. The reversal of 53055255881 is 18855255035.

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 53055255881 - 218 = 53054993737 is a prime.

It is a super-2 number, since 2×530552558812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53055255887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158847905 + ... + 158848238.

It is an arithmetic number, because the mean of its divisors is an integer number (13343238048).

Almost surely, 253055255881 is an apocalyptic number.

It is an amenable number.

53055255881 is a deficient number, since it is larger than the sum of its proper divisors (317696311).

53055255881 is a wasteful number, since it uses less digits than its factorization.

53055255881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317696310.

The product of its (nonzero) digits is 1200000, while the sum is 47.

The spelling of 53055255881 in words is "fifty-three billion, fifty-five million, two hundred fifty-five thousand, eight hundred eighty-one".

Divisors: 1 167 317696143 53055255881