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80801453 = 292786257
BaseRepresentation
bin1001101000011…
…10111010101101
312122001010202102
410310032322231
5131141121303
612003504445
72000541515
oct464167255
9178033672
1080801453
1141679367
1223088125
1313981115
14aa34845
157161288
hex4d0eead

80801453 has 4 divisors (see below), whose sum is σ = 83587740. Its totient is φ = 78015168.

The previous prime is 80801449. The next prime is 80801467. The reversal of 80801453 is 35410808.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58400164 + 22401289 = 7642^2 + 4733^2 .

It is a cyclic number.

It is not a de Polignac number, because 80801453 - 22 = 80801449 is a prime.

It is a super-2 number, since 2×808014532 = 13057749613822418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2786257 = 80801453 / (8 + 0 + 8 + 0 + 1 + 4 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80801473) 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, 1393100 + ... + 1393157.

It is an arithmetic number, because the mean of its divisors is an integer number (20896935).

Almost surely, 280801453 is an apocalyptic number.

It is an amenable number.

80801453 is a deficient number, since it is larger than the sum of its proper divisors (2786287).

80801453 is a wasteful number, since it uses less digits than its factorization.

80801453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786286.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 80801453 is about 8988.9628433986. The cubic root of 80801453 is about 432.3210579874.

The spelling of 80801453 in words is "eighty million, eight hundred one thousand, four hundred fifty-three".

Divisors: 1 29 2786257 80801453