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520080491 = 7239310867
BaseRepresentation
bin11110111111111…
…100110001101011
31100020121211022102
4132333330301223
52031120033431
6123335044015
715613416440
oct3677746153
91306554272
10520080491
11247632197
1212621060b
1383996048
144d1019c7
15309d2dcb
hex1effcc6b

520080491 has 8 divisors (see below), whose sum is σ = 596866560. Its totient is φ = 443916648.

The previous prime is 520080481. The next prime is 520080493. The reversal of 520080491 is 194080025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520080491 - 214 = 520064107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520080493) 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, 153761 + ... + 157106.

It is an arithmetic number, because the mean of its divisors is an integer number (74608320).

Almost surely, 2520080491 is an apocalyptic number.

520080491 is a deficient number, since it is larger than the sum of its proper divisors (76786069).

520080491 is a wasteful number, since it uses less digits than its factorization.

520080491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311113.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 520080491 is about 22805.2733156172. The cubic root of 520080491 is about 804.1866408896.

The spelling of 520080491 in words is "five hundred twenty million, eighty thousand, four hundred ninety-one".

Divisors: 1 7 239 1673 310867 2176069 74297213 520080491