154247 has 2 divisors, whose sum is σ = 154248. Its totient is φ = 154246.

The previous prime is 154243. The next prime is 154267. The reversal of 154247 is 742451.

154247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154247 - 2² = 154243 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77123 + 77124.

It is an arithmetic number, because the mean of its divisors is an integer number (77124).

2¹⁵⁴²⁴⁷ is an apocalyptic number.

154247 is a deficient number, since it is larger than the sum of its proper divisors (1).

154247 is an equidigital number, since it uses as much as digits as its factorization.

154247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 23.

The square root of 154247 is about 392.7429184594. The cubic root of 154247 is about 53.6297256591.

Adding to 154247 its reverse (742451), we get a palindrome (896698).

The spelling of 154247 in words is "one hundred fifty-four thousand, two hundred forty-seven".