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55253133533 = 1313613122881
BaseRepresentation
bin110011011101010101…
…111110100011011101
312021121200112000010002
4303131111332203131
51401124300233113
641214414224045
73664136612603
oct633525764335
9167550460102
1055253133533
1121483a54024
12a8601b5025
13529719a370
142962285873
151685b4dc58
hexcdd57e8dd

55253133533 has 8 divisors (see below), whose sum is σ = 59547113976. Its totient is φ = 50965401600.

The previous prime is 55253133527. The next prime is 55253133547. The reversal of 55253133533 is 33533135255.

It can be written as a sum of positive squares in 4 ways, for example, as 5458549924 + 49794583609 = 73882^2 + 223147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55253133533 - 26 = 55253133469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55253103533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1543748 + ... + 1579133.

It is an arithmetic number, because the mean of its divisors is an integer number (7443389247).

Almost surely, 255253133533 is an apocalyptic number.

It is an amenable number.

55253133533 is a deficient number, since it is larger than the sum of its proper divisors (4293980443).

55253133533 is a wasteful number, since it uses less digits than its factorization.

55253133533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124255.

The product of its digits is 303750, while the sum is 38.

Adding to 55253133533 its reverse (33533135255), we get a palindrome (88786268788).

The spelling of 55253133533 in words is "fifty-five billion, two hundred fifty-three million, one hundred thirty-three thousand, five hundred thirty-three".

Divisors: 1 13 1361 17693 3122881 40597453 4250241041 55253133533