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55546 = 227773
BaseRepresentation
bin1101100011111010
32211012021
431203322
53234141
61105054
7320641
oct154372
984167
1055546
1138807
122818a
131c38a
1416358
15116d1
hexd8fa

55546 has 4 divisors (see below), whose sum is σ = 83322. Its totient is φ = 27772.

The previous prime is 55541. The next prime is 55547. The reversal of 55546 is 64555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64555 = 512911.

It can be written as a sum of positive squares in only one way, i.e., 44521 + 11025 = 211^2 + 105^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55546.

It is not an unprimeable number, because it can be changed into a prime (55541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13885 + ... + 13888.

255546 is an apocalyptic number.

55546 is a deficient number, since it is larger than the sum of its proper divisors (27776).

55546 is a wasteful number, since it uses less digits than its factorization.

55546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27775.

The product of its digits is 3000, while the sum is 25.

The square root of 55546 is about 235.6819891294. The cubic root of 55546 is about 38.1549536169.

Subtracting 55546 from its reverse (64555), we obtain a palindrome (9009).

It can be divided in two parts, 5 and 5546, that multiplied together give a triangular number (27730 = T235).

The spelling of 55546 in words is "fifty-five thousand, five hundred forty-six".

Divisors: 1 2 27773 55546