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551216053 = 3122977647
BaseRepresentation
bin100000110110101…
…110001110110101
31102102012200021101
4200312232032311
52112102403203
6130410250101
716442154613
oct4066561665
91372180241
10551216053
11263168863
12134726931
138a277b5b
14532c86b3
15335d341d
hex20dae3b5

551216053 has 8 divisors (see below), whose sum is σ = 571489280. Its totient is φ = 531098640.

The previous prime is 551215997. The next prime is 551216111. The reversal of 551216053 is 350612155.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-551216053 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 (551216453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31725 + ... + 45922.

It is an arithmetic number, because the mean of its divisors is an integer number (71436160).

Almost surely, 2551216053 is an apocalyptic number.

It is an amenable number.

551216053 is a deficient number, since it is larger than the sum of its proper divisors (20273227).

551216053 is a wasteful number, since it uses less digits than its factorization.

551216053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77907.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 551216053 is about 23477.9908211925. The cubic root of 551216053 is about 819.9246673805.

The spelling of 551216053 in words is "five hundred fifty-one million, two hundred sixteen thousand, fifty-three".

Divisors: 1 31 229 7099 77647 2407057 17781163 551216053