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80553539 = 1127726437
BaseRepresentation
bin1001100110100…
…10011001000011
312121120112200102
410303102121003
5131110203124
611554313015
71665456653
oct463223103
9177515612
1080553539
114151a080
1222b8876b
13138c5321
14a9ac363
157112aae
hex4cd2643

80553539 has 8 divisors (see below), whose sum is σ = 88197168. Its totient is φ = 72963360.

The previous prime is 80553533. The next prime is 80553563. The reversal of 80553539 is 93535508.

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 80553539 - 24 = 80553523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80553533) 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, 10172 + ... + 16265.

It is an arithmetic number, because the mean of its divisors is an integer number (11024646).

Almost surely, 280553539 is an apocalyptic number.

80553539 is a deficient number, since it is larger than the sum of its proper divisors (7643629).

80553539 is a wasteful number, since it uses less digits than its factorization.

80553539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26725.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 80553539 is about 8975.1623383647. The cubic root of 80553539 is about 431.8784576771.

The spelling of 80553539 in words is "eighty million, five hundred fifty-three thousand, five hundred thirty-nine".

Divisors: 1 11 277 3047 26437 290807 7323049 80553539