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80488521 = 3210618429
BaseRepresentation
bin1001100110000…
…10100001001001
312121110020111100
410303002201021
5131101113041
611553052013
71665066261
oct463024111
9177406440
1080488521
1141485243
1222b57009
13138a1859
14a9927a1
1570ed6b6
hex4cc2849

80488521 has 12 divisors (see below), whose sum is σ = 116384580. Its totient is φ = 53602080.

The previous prime is 80488481. The next prime is 80488537. The reversal of 80488521 is 12588408.

It can be written as a sum of positive squares in 2 ways, for example, as 32046921 + 48441600 = 5661^2 + 6960^2 .

It is not a de Polignac number, because 80488521 - 217 = 80357449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80488571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5335 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (9698715).

Almost surely, 280488521 is an apocalyptic number.

It is an amenable number.

80488521 is a deficient number, since it is larger than the sum of its proper divisors (35896059).

80488521 is a wasteful number, since it uses less digits than its factorization.

80488521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9496 (or 9493 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 80488521 is about 8971.5394999966. The cubic root of 80488521 is about 431.7622309121.

It can be divided in two parts, 80 and 488521, that added together give a square (488601 = 6992).

The spelling of 80488521 in words is "eighty million, four hundred eighty-eight thousand, five hundred twenty-one".

Divisors: 1 3 9 1061 3183 8429 9549 25287 75861 8943169 26829507 80488521