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551242105 = 51311376143
BaseRepresentation
bin100000110110110…
…100100101111001
31102102021000000021
4200312310211321
52112104221410
6130411010441
716442323561
oct4066644571
91372230007
10551242105
11263186397
12134739a21
138a28697b
14532d3da1
15335daeda
hex20db4979

551242105 has 16 divisors (see below), whose sum is σ = 671514624. Its totient is φ = 434362240.

The previous prime is 551242099. The next prime is 551242129. The reversal of 551242105 is 501242155.

551242105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551242105 - 225 = 517687673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551242105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86664 + ... + 92806.

It is an arithmetic number, because the mean of its divisors is an integer number (41969664).

Almost surely, 2551242105 is an apocalyptic number.

It is an amenable number.

551242105 is a deficient number, since it is larger than the sum of its proper divisors (120272519).

551242105 is a wasteful number, since it uses less digits than its factorization.

551242105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 551242105 is about 23478.5456321298. The cubic root of 551242105 is about 819.9375844819.

The spelling of 551242105 in words is "five hundred fifty-one million, two hundred forty-two thousand, one hundred five".

Divisors: 1 5 131 137 655 685 6143 17947 30715 89735 804733 841591 4023665 4207955 110248421 551242105