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551344253 = 73149173293
BaseRepresentation
bin100000110111001…
…101100001111101
31102102110012010112
4200313031201331
52112121004003
6130413115405
716443230435
oct4067154175
91372405115
10551344253
11263246109
12134788b65
138a2c1305
145331d2c5
153360b3d8
hex20dcd87d

551344253 has 16 divisors (see below), whose sum is σ = 567831600. Its totient is φ = 535186944.

The previous prime is 551344243. The next prime is 551344301. The reversal of 551344253 is 352443155.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 58415449 + 492928804 = 7643^2 + 22202^2 .

It is not a de Polignac number, because 551344253 - 28 = 551343997 is a prime.

It is a super-2 number, since 2×5513442532 = 607960970632256018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551344243) 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, 1881575 + ... + 1881867.

It is an arithmetic number, because the mean of its divisors is an integer number (35489475).

Almost surely, 2551344253 is an apocalyptic number.

It is an amenable number.

551344253 is a deficient number, since it is larger than the sum of its proper divisors (16487347).

551344253 is a wasteful number, since it uses less digits than its factorization.

551344253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688.

The product of its digits is 36000, while the sum is 32.

The square root of 551344253 is about 23480.7208790531. The cubic root of 551344253 is about 819.9882275724.

The spelling of 551344253 in words is "five hundred fifty-one million, three hundred forty-four thousand, two hundred fifty-three".

Divisors: 1 73 149 173 293 10877 12629 21389 25777 43657 50689 1881721 3186961 3700297 7552661 551344253