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53946121 = 129741593
BaseRepresentation
bin1100110111001…
…0011100001001
310202111202011111
43031302130021
5102302233441
65204130321
71223351215
oct315623411
9122452144
1053946121
11284a6579
12160969a1
13b23a5a8
147243945
154b09081
hex3372709

53946121 has 4 divisors (see below), whose sum is σ = 53989012. Its totient is φ = 53903232.

The previous prime is 53946089. The next prime is 53946127. The reversal of 53946121 is 12164935.

53946121 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, and also an emirpimes, since its reverse is a distinct semiprime: 12164935 = 52432987.

It can be written as a sum of positive squares in 2 ways, for example, as 37454400 + 16491721 = 6120^2 + 4061^2 .

It is a cyclic number.

It is not a de Polignac number, because 53946121 - 25 = 53946089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53946127) 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, 19500 + ... + 22093.

It is an arithmetic number, because the mean of its divisors is an integer number (13497253).

Almost surely, 253946121 is an apocalyptic number.

It is an amenable number.

53946121 is a deficient number, since it is larger than the sum of its proper divisors (42891).

53946121 is a wasteful number, since it uses less digits than its factorization.

53946121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42890.

The product of its digits is 6480, while the sum is 31.

The square root of 53946121 is about 7344.8023118393. The cubic root of 53946121 is about 377.8505633466.

The spelling of 53946121 in words is "fifty-three million, nine hundred forty-six thousand, one hundred twenty-one".

Divisors: 1 1297 41593 53946121