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55393 = 134261
BaseRepresentation
bin1101100001100001
32210222121
431201201
53233033
61104241
7320332
oct154141
983877
1055393
1138688
1228081
131c2a0
1416289
151162d
hexd861

55393 has 4 divisors (see below), whose sum is σ = 59668. Its totient is φ = 51120.

The previous prime is 55381. The next prime is 55399. The reversal of 55393 is 39355.

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 33489 + 21904 = 183^2 + 148^2 .

It is a cyclic number.

It is not a de Polignac number, because 55393 - 29 = 54881 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (14917).

255393 is an apocalyptic number.

It is an amenable number.

55393 is a deficient number, since it is larger than the sum of its proper divisors (4275).

55393 is a wasteful number, since it uses less digits than its factorization.

55393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274.

The product of its digits is 2025, while the sum is 25.

The square root of 55393 is about 235.3571753739. The cubic root of 55393 is about 38.1198891295.

It can be divided in two parts, 553 and 93, that added together give a palindrome (646).

The spelling of 55393 in words is "fifty-five thousand, three hundred ninety-three".

Divisors: 1 13 4261 55393