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154213 is a prime number
BaseRepresentation
bin100101101001100101
321211112121
4211221211
514413323
63145541
71211413
oct455145
9254477
10154213
11a5954
12752b1
1355267
14402b3
1530a5d
hex25a65

154213 has 2 divisors, whose sum is σ = 154214. Its totient is φ = 154212.

The previous prime is 154211. The next prime is 154229. The reversal of 154213 is 312451.

Adding to 154213 its reverse (312451), we get a palindrome (466664).

154213 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 (154229) can be obtained adding 154213 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., 116964 + 37249 = 342^2 + 193^2 .

It is an emirp because it is prime and its reverse (312451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154213 - 21 = 154211 is a prime.

Together with 154211, it forms a pair of twin primes.

154213 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77106 + 77107.

It is an arithmetic number, because the mean of its divisors is an integer number (77107).

2154213 is an apocalyptic number.

It is an amenable number.

154213 is a deficient number, since it is larger than the sum of its proper divisors (1).

154213 is an equidigital number, since it uses as much as digits as its factorization.

154213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 16.

The square root of 154213 is about 392.6996307612. The cubic root of 154213 is about 53.6257849132.

The spelling of 154213 in words is "one hundred fifty-four thousand, two hundred thirteen".