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80068553 = 973732213
BaseRepresentation
bin1001100010110…
…11111111001001
312120122220101222
410301123333021
5130444143203
611540051425
71661400005
oct461337711
9176586358
1080068553
1141218764
1222993b75
1313785656
14a8c3705
157069038
hex4c5bfc9

80068553 has 8 divisors (see below), whose sum is σ = 81147528. Its totient is φ = 78994944.

The previous prime is 80068529. The next prime is 80068579. The reversal of 80068553 is 35586008.

It can be written as a sum of positive squares in 4 ways, for example, as 36336784 + 43731769 = 6028^2 + 6613^2 .

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 80068553 - 210 = 80067529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80068253) 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, 35075 + ... + 37287.

It is an arithmetic number, because the mean of its divisors is an integer number (10143441).

Almost surely, 280068553 is an apocalyptic number.

It is an amenable number.

80068553 is a deficient number, since it is larger than the sum of its proper divisors (1078975).

80068553 is a wasteful number, since it uses less digits than its factorization.

80068553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 80068553 is about 8948.1033185810. The cubic root of 80068553 is about 431.0099803353.

The spelling of 80068553 in words is "eighty million, sixty-eight thousand, five hundred fifty-three".

Divisors: 1 97 373 2213 36181 214661 825449 80068553