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55253500501 = 312117703781
BaseRepresentation
bin110011011101010111…
…011000001001010101
312021121201012122111111
4303131113120021111
51401124344004001
641214430135021
73664143001513
oct633527301125
9167551178444
1055253500501
1121484184801
12a860351471
1352972983c4
14296233d4b3
151685bc2851
hexcdd5d8255

55253500501 has 4 divisors (see below), whose sum is σ = 55271207404. Its totient is φ = 55235793600.

The previous prime is 55253500469. The next prime is 55253500537. The reversal of 55253500501 is 10500535255.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4369871025 + 50883629476 = 66105^2 + 225574^2 .

It is a cyclic number.

It is not a de Polignac number, because 55253500501 - 25 = 55253500469 is a prime.

It is a super-2 number, since 2×552535005012 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55253500591) 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, 8848770 + ... + 8855011.

It is an arithmetic number, because the mean of its divisors is an integer number (13817801851).

Almost surely, 255253500501 is an apocalyptic number.

It is an amenable number.

55253500501 is a deficient number, since it is larger than the sum of its proper divisors (17706903).

55253500501 is a wasteful number, since it uses less digits than its factorization.

55253500501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17706902.

The product of its (nonzero) digits is 18750, while the sum is 31.

The spelling of 55253500501 in words is "fifty-five billion, two hundred fifty-three million, five hundred thousand, five hundred one".

Divisors: 1 3121 17703781 55253500501