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53506801 = 73372997
BaseRepresentation
bin1100110000011…
…1001011110001
310201200102112101
43030013023301
5102144204201
65150500401
71216541335
oct314071361
9121612471
1053506801
11282264a7
1215b04701
13b11563a
14716b7c5
154a6dd01
hex33072f1

53506801 has 4 divisors (see below), whose sum is σ = 53580532. Its totient is φ = 53433072.

The previous prime is 53506777. The next prime is 53506823. The reversal of 53506801 is 10860535.

53506801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 38452401 + 15054400 = 6201^2 + 3880^2 .

It is a cyclic number.

It is not a de Polignac number, because 53506801 - 219 = 52982513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53506801.

It is not an unprimeable number, because it can be changed into a prime (53506891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35766 + ... + 37231.

It is an arithmetic number, because the mean of its divisors is an integer number (13395133).

Almost surely, 253506801 is an apocalyptic number.

It is an amenable number.

53506801 is a deficient number, since it is larger than the sum of its proper divisors (73731).

53506801 is an equidigital number, since it uses as much as digits as its factorization.

53506801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73730.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 53506801 is about 7314.8343111789. The cubic root of 53506801 is about 376.8220682115.

The spelling of 53506801 in words is "fifty-three million, five hundred six thousand, eight hundred one".

Divisors: 1 733 72997 53506801