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53118271 = 191327767
BaseRepresentation
bin1100101010100…
…0010100111111
310200221200120101
43022220110333
5102044241041
65134301531
71213332523
oct312502477
9120850511
1053118271
1127a905a8
12159578a7
13b00a83b
1470a9d83
1549e3b31
hex32a853f

53118271 has 4 divisors (see below), whose sum is σ = 53147952. Its totient is φ = 53088592.

The previous prime is 53118269. The next prime is 53118313. The reversal of 53118271 is 17281135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17281135 = 53456227.

It is a cyclic number.

It is not a de Polignac number, because 53118271 - 21 = 53118269 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 (53118971) 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, 11971 + ... + 15796.

It is an arithmetic number, because the mean of its divisors is an integer number (13286988).

Almost surely, 253118271 is an apocalyptic number.

53118271 is a deficient number, since it is larger than the sum of its proper divisors (29681).

53118271 is a wasteful number, since it uses less digits than its factorization.

53118271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29680.

The product of its digits is 1680, while the sum is 28.

The square root of 53118271 is about 7288.2282483468. The cubic root of 53118271 is about 375.9077764423.

The spelling of 53118271 in words is "fifty-three million, one hundred eighteen thousand, two hundred seventy-one".

Divisors: 1 1913 27767 53118271