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BaseRepresentation
bin1001100010101…
…11000110111001
312120121212222211
410301113012321
5130443023234
611535415121
71661254516
oct461270671
9176555884
1080048569
1141204747
12229844a1
1313779523
14a8ba30d
157063164
hex4c571b9

80048569 has 2 divisors, whose sum is σ = 80048570. Its totient is φ = 80048568.

The previous prime is 80048543. The next prime is 80048581. The reversal of 80048569 is 96584008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64208169 + 15840400 = 8013^2 + 3980^2 .

It is a cyclic number.

It is not a de Polignac number, because 80048569 - 221 = 77951417 is a prime.

It is a super-2 number, since 2×800485692 = 12815546797895522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80045569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40024284 + 40024285.

It is an arithmetic number, because the mean of its divisors is an integer number (40024285).

Almost surely, 280048569 is an apocalyptic number.

It is an amenable number.

80048569 is a deficient number, since it is larger than the sum of its proper divisors (1).

80048569 is an equidigital number, since it uses as much as digits as its factorization.

80048569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 80048569 is about 8946.9865876730. The cubic root of 80048569 is about 430.9741193145.

The spelling of 80048569 in words is "eighty million, forty-eight thousand, five hundred sixty-nine".