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54421 is a prime number
BaseRepresentation
bin1101010010010101
32202122121
431102111
53220141
61055541
7314443
oct152225
982577
1054421
1137984
12275b1
131ba03
1415b93
15111d1
hexd495

54421 has 2 divisors, whose sum is σ = 54422. Its totient is φ = 54420.

The previous prime is 54419. The next prime is 54437. The reversal of 54421 is 12445.

54421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (54437) can be obtained adding 54421 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52900 + 1521 = 230^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 54421 - 21 = 54419 is a prime.

Together with 54419, it forms a pair of twin primes.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 54395 and 54404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27210 + 27211.

It is an arithmetic number, because the mean of its divisors is an integer number (27211).

254421 is an apocalyptic number.

It is an amenable number.

54421 is a deficient number, since it is larger than the sum of its proper divisors (1).

54421 is an equidigital number, since it uses as much as digits as its factorization.

54421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160, while the sum is 16.

The square root of 54421 is about 233.2830898286. The cubic root of 54421 is about 37.8956045055.

Adding to 54421 its reverse (12445), we get a palindrome (66866).

It can be divided in two parts, 544 and 21, that added together give a palindrome (565).

The spelling of 54421 in words is "fifty-four thousand, four hundred twenty-one".