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55204055 = 5131271311
BaseRepresentation
bin1101001010010…
…1100011010111
310211212122201122
43102211203113
5103113012210
65251114155
71240140524
oct322454327
9124778648
1055204055
1129185695
12165a295b
13b58b02a
14749014b
154ca6b55
hex34a58d7

55204055 has 16 divisors (see below), whose sum is σ = 67212288. Its totient is φ = 43524000.

The previous prime is 55204043. The next prime is 55204057. The reversal of 55204055 is 55040255.

It is not a de Polignac number, because 55204055 - 216 = 55138519 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 (55204057) 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, 177350 + ... + 177660.

It is an arithmetic number, because the mean of its divisors is an integer number (4200768).

Almost surely, 255204055 is an apocalyptic number.

55204055 is a deficient number, since it is larger than the sum of its proper divisors (12008233).

55204055 is a wasteful number, since it uses less digits than its factorization.

55204055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 55204055 is about 7429.9431357178. The cubic root of 55204055 is about 380.7649756195.

The spelling of 55204055 in words is "fifty-five million, two hundred four thousand, fifty-five".

Divisors: 1 5 131 271 311 655 1355 1555 35501 40741 84281 177505 203705 421405 11040811 55204055