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5215208549 = 73227314719
BaseRepresentation
bin1001101101101100…
…11100010001100101
3111110110100001012012
410312312130101211
541140043133144
62221300004005
7243144353435
oct46666342145
914413301165
105215208549
112236938411
121016690605
1365160c425
143768c22c5
15207cb6e9e
hex136d9c465

5215208549 has 8 divisors (see below), whose sum is σ = 5309955840. Its totient is φ = 5121091296.

The previous prime is 5215208539. The next prime is 5215208599. The reversal of 5215208549 is 9458025125.

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 5215208549 - 216 = 5215143013 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 (5215208539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140789 + ... + 173930.

It is an arithmetic number, because the mean of its divisors is an integer number (663744480).

Almost surely, 25215208549 is an apocalyptic number.

It is an amenable number.

5215208549 is a deficient number, since it is larger than the sum of its proper divisors (94747291).

5215208549 is a wasteful number, since it uses less digits than its factorization.

5215208549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315019.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 5215208549 is about 72216.4008311131. The cubic root of 5215208549 is about 1734.1655718420.

The spelling of 5215208549 in words is "five billion, two hundred fifteen million, two hundred eight thousand, five hundred forty-nine".

Divisors: 1 73 227 16571 314719 22974487 71441213 5215208549