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53247 = 317749
BaseRepresentation
bin1100111111111111
32201001010
430333333
53200442
61050303
7311145
oct147777
981033
1053247
1137007
1226993
131b30c
1415595
1510b9c
hexcfff

53247 has 4 divisors (see below), whose sum is σ = 71000. Its totient is φ = 35496.

The previous prime is 53239. The next prime is 53267. The reversal of 53247 is 74235.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 53247 - 23 = 53239 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 8 and base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53267) 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, 8872 + ... + 8877.

It is an arithmetic number, because the mean of its divisors is an integer number (17750).

253247 is an apocalyptic number.

53247 is a deficient number, since it is larger than the sum of its proper divisors (17753).

53247 is a wasteful number, since it uses less digits than its factorization.

53247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17752.

The product of its digits is 840, while the sum is 21.

The square root of 53247 is about 230.7531148219. The cubic root of 53247 is about 37.6211194918.

It can be divided in two parts, 53 and 247, that added together give a triangular number (300 = T24).

The spelling of 53247 in words is "fifty-three thousand, two hundred forty-seven".

Divisors: 1 3 17749 53247