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513080247 = 31747214051
BaseRepresentation
bin11110100101001…
…111101110110111
31022202110011210010
4132211033232313
52022322031442
6122525031303
715500052531
oct3645175667
91282404703
10513080247
11243690869
121239b5533
13823b49a4
144c1dc851
153009db9c
hex1e94fbb7

513080247 has 16 divisors (see below), whose sum is σ = 739763712. Its totient is φ = 315081600.

The previous prime is 513080231. The next prime is 513080261. The reversal of 513080247 is 742080315.

It is not a de Polignac number, because 513080247 - 24 = 513080231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513030247) 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, 104629 + ... + 109422.

It is an arithmetic number, because the mean of its divisors is an integer number (46235232).

Almost surely, 2513080247 is an apocalyptic number.

513080247 is a deficient number, since it is larger than the sum of its proper divisors (226683465).

513080247 is a wasteful number, since it uses less digits than its factorization.

513080247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214118.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 513080247 is about 22651.2747323412. The cubic root of 513080247 is about 800.5622334202.

The spelling of 513080247 in words is "five hundred thirteen million, eighty thousand, two hundred forty-seven".

Divisors: 1 3 17 47 51 141 799 2397 214051 642153 3638867 10060397 10916601 30181191 171026749 513080247