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53072053 = 165732029
BaseRepresentation
bin1100101001110…
…1000010110101
310200212100011121
43022131002311
5102041301203
65133303541
71213051006
oct312350265
9120770147
1053072053
1127a59901
1215934bb1
13acc27a8
1470971ad
1549d50bd
hex329d0b5

53072053 has 4 divisors (see below), whose sum is σ = 53105740. Its totient is φ = 53038368.

The previous prime is 53072051. The next prime is 53072069. The reversal of 53072053 is 35027035.

53072053 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 5489649 + 47582404 = 2343^2 + 6898^2 .

It is a cyclic number.

It is not a de Polignac number, because 53072053 - 21 = 53072051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53072051) 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, 14358 + ... + 17671.

It is an arithmetic number, because the mean of its divisors is an integer number (13276435).

Almost surely, 253072053 is an apocalyptic number.

It is an amenable number.

53072053 is a deficient number, since it is larger than the sum of its proper divisors (33687).

53072053 is a wasteful number, since it uses less digits than its factorization.

53072053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33686.

The product of its (nonzero) digits is 3150, while the sum is 25.

The square root of 53072053 is about 7285.0568288792. The cubic root of 53072053 is about 375.7987195105.

Adding to 53072053 its reverse (35027035), we get a palindrome (88099088).

The spelling of 53072053 in words is "fifty-three million, seventy-two thousand, fifty-three".

Divisors: 1 1657 32029 53072053