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55442 = 2191459
BaseRepresentation
bin1101100010010010
32211001102
431202102
53233232
61104402
7320432
oct154222
984042
1055442
1138722
1228102
131c30a
14162c2
1511662
hexd892

55442 has 8 divisors (see below), whose sum is σ = 87600. Its totient is φ = 26244.

The previous prime is 55441. The next prime is 55457. The reversal of 55442 is 24455.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55441) 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, 692 + ... + 767.

It is an arithmetic number, because the mean of its divisors is an integer number (10950).

255442 is an apocalyptic number.

55442 is a deficient number, since it is larger than the sum of its proper divisors (32158).

55442 is a wasteful number, since it uses less digits than its factorization.

55442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480.

The product of its digits is 800, while the sum is 20.

The square root of 55442 is about 235.4612494658. The cubic root of 55442 is about 38.1311259528.

Adding to 55442 its reverse (24455), we get a palindrome (79897).

It can be divided in two parts, 55 and 442, that multiplied together give a triangular number (24310 = T220).

The spelling of 55442 in words is "fifty-five thousand, four hundred forty-two".

Divisors: 1 2 19 38 1459 2918 27721 55442