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52142053 = 61784509
BaseRepresentation
bin1100011011100…
…1111111100101
310122010002110011
43012321333211
5101322021203
65101330221
71202125435
oct306717745
9118102404
1052142053
1127484107
1215566971
13aa583b2
146cd42c5
15489e76d
hex31b9fe5

52142053 has 4 divisors (see below), whose sum is σ = 52227180. Its totient is φ = 52056928.

The previous prime is 52142047. The next prime is 52142071. The reversal of 52142053 is 35024125.

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 15382084 + 36759969 = 3922^2 + 6063^2 .

It is a cyclic number.

It is not a de Polignac number, because 52142053 - 221 = 50044901 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 (52142353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41638 + ... + 42871.

It is an arithmetic number, because the mean of its divisors is an integer number (13056795).

Almost surely, 252142053 is an apocalyptic number.

It is an amenable number.

52142053 is a deficient number, since it is larger than the sum of its proper divisors (85127).

52142053 is an equidigital number, since it uses as much as digits as its factorization.

52142053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85126.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 52142053 is about 7220.9454367139. The cubic root of 52142053 is about 373.5906876866.

Adding to 52142053 its reverse (35024125), we get a palindrome (87166178).

The spelling of 52142053 in words is "fifty-two million, one hundred forty-two thousand, fifty-three".

Divisors: 1 617 84509 52142053