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551872053 = 3261319117
BaseRepresentation
bin100000111001001…
…110011000110101
31102110110000010200
4200321032120311
52112234401203
6130432311113
716450556265
oct4071163065
91373400120
10551872053
11263576707
121349a2499
138a447615
14534197a5
15336b29a3
hex20e4e635

551872053 has 6 divisors (see below), whose sum is σ = 797148534. Its totient is φ = 367914696.

The previous prime is 551872033. The next prime is 551872067. The reversal of 551872053 is 350278155.

551872053 is a `hidden beast` number, since 551 + 87 + 20 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 469025649 + 82846404 = 21657^2 + 9102^2 .

It is not a de Polignac number, because 551872053 - 213 = 551863861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551871999 and 551872017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551872033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30659550 + ... + 30659567.

It is an arithmetic number, because the mean of its divisors is an integer number (132858089).

Almost surely, 2551872053 is an apocalyptic number.

It is an amenable number.

551872053 is a deficient number, since it is larger than the sum of its proper divisors (245276481).

551872053 is a wasteful number, since it uses less digits than its factorization.

551872053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61319123 (or 61319120 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 551872053 is about 23491.9571981561. The cubic root of 551872053 is about 820.2498014468.

The spelling of 551872053 in words is "five hundred fifty-one million, eight hundred seventy-two thousand, fifty-three".

Divisors: 1 3 9 61319117 183957351 551872053