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83050553 = 173480061
BaseRepresentation
bin1001111001101…
…00000000111001
312210021101221102
410330310000321
5132230104203
612124021145
72025626615
oct474640071
9183241842
1083050553
1142975123
12239917b5
131428aa51
14b05c345
157457888
hex4f34039

83050553 has 4 divisors (see below), whose sum is σ = 83530788. Its totient is φ = 82570320.

The previous prime is 83050531. The next prime is 83050571. The reversal of 83050553 is 35505038.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35505038 = 217752519.

It can be written as a sum of positive squares in 2 ways, for example, as 32398864 + 50651689 = 5692^2 + 7117^2 .

It is a cyclic number.

It is not a de Polignac number, because 83050553 - 214 = 83034169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83050573) 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, 239858 + ... + 240203.

It is an arithmetic number, because the mean of its divisors is an integer number (20882697).

Almost surely, 283050553 is an apocalyptic number.

It is an amenable number.

83050553 is a deficient number, since it is larger than the sum of its proper divisors (480235).

83050553 is a wasteful number, since it uses less digits than its factorization.

83050553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480234.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 83050553 is about 9113.2076131294. The cubic root of 83050553 is about 436.2956097173.

The spelling of 83050553 in words is "eighty-three million, fifty thousand, five hundred fifty-three".

Divisors: 1 173 480061 83050553