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80526131 = 711503733
BaseRepresentation
bin1001100110010…
…11101100110011
312121112011002022
410303023230303
5131103314011
611553542055
71665314030
oct463135463
9177464068
1080526131
1141500524
1222b7492b
13138b59ca
14a9a2387
1571098db
hex4ccbb33

80526131 has 4 divisors (see below), whose sum is σ = 92029872. Its totient is φ = 69022392.

The previous prime is 80526119. The next prime is 80526139. The reversal of 80526131 is 13162508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80526131 is a prime.

It is a super-2 number, since 2×805261312 = 12968915547658322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80526131.

It is not an unprimeable number, because it can be changed into a prime (80526139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5751860 + ... + 5751873.

It is an arithmetic number, because the mean of its divisors is an integer number (23007468).

Almost surely, 280526131 is an apocalyptic number.

80526131 is a deficient number, since it is larger than the sum of its proper divisors (11503741).

80526131 is a wasteful number, since it uses less digits than its factorization.

80526131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11503740.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 80526131 is about 8973.6353280039. The cubic root of 80526131 is about 431.8294705163.

Adding to 80526131 its reverse (13162508), we get a palindrome (93688639).

The spelling of 80526131 in words is "eighty million, five hundred twenty-six thousand, one hundred thirty-one".

Divisors: 1 7 11503733 80526131