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551114785 = 5138478689
BaseRepresentation
bin100000110110010…
…101100000100001
31102102000112100201
4200312111200201
52112041133120
6130404145201
716441253434
oct4066254041
91372015321
10551114785
112630a9771
12134698201
138a240a30
145329d81b
15335b340a
hex20d95821

551114785 has 8 divisors (see below), whose sum is σ = 712209960. Its totient is φ = 406977024.

The previous prime is 551114783. The next prime is 551114801. The reversal of 551114785 is 587411155.

It can be written as a sum of positive squares in 4 ways, for example, as 1868689 + 549246096 = 1367^2 + 23436^2 .

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 551114785 - 21 = 551114783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551114783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4239280 + ... + 4239409.

It is an arithmetic number, because the mean of its divisors is an integer number (89026245).

Almost surely, 2551114785 is an apocalyptic number.

It is an amenable number.

551114785 is a deficient number, since it is larger than the sum of its proper divisors (161095175).

551114785 is a wasteful number, since it uses less digits than its factorization.

551114785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478707.

The product of its digits is 28000, while the sum is 37.

The square root of 551114785 is about 23475.8340639901. The cubic root of 551114785 is about 819.8744528194.

The spelling of 551114785 in words is "five hundred fifty-one million, one hundred fourteen thousand, seven hundred eighty-five".

Divisors: 1 5 13 65 8478689 42393445 110222957 551114785