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5211854180 = 2251320045593
BaseRepresentation
bin1001101101010011…
…01001010101100100
3111110020000121212022
410312221221111210
541133213313210
62221100042312
7243104013101
oct46651512544
914406017768
105211854180
112234a57205
121015533398
13650a066b0
1437628baa8
15207853155
hex136a69564

5211854180 has 24 divisors (see below), whose sum is σ = 11786809272. Its totient is φ = 1924376832.

The previous prime is 5211854177. The next prime is 5211854189. The reversal of 5211854180 is 814581125.

It can be written as a sum of positive squares in 4 ways, for example, as 390773824 + 4821080356 = 19768^2 + 69434^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5211854180.

It is not an unprimeable number, because it can be changed into a prime (5211854189) 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, 10022537 + ... + 10023056.

It is an arithmetic number, because the mean of its divisors is an integer number (491117053).

Almost surely, 25211854180 is an apocalyptic number.

It is an amenable number.

5211854180 is an abundant number, since it is smaller than the sum of its proper divisors (6574955092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5211854180 is a wasteful number, since it uses less digits than its factorization.

5211854180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20045615 (or 20045613 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 35.

The square root of 5211854180 is about 72193.1726688888. The cubic root of 5211854180 is about 1733.7936928923.

The spelling of 5211854180 in words is "five billion, two hundred eleven million, eight hundred fifty-four thousand, one hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 20045593 40091186 80182372 100227965 200455930 260592709 400911860 521185418 1042370836 1302963545 2605927090 5211854180