154729229 has 2 divisors, whose sum is σ = 154729230. Its totient is φ = 154729228.

The previous prime is 154729213. The next prime is 154729243. The reversal of 154729229 is 922927451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148108900 + 6620329 = 12170^2 + 2573^2 .

It is a cyclic number.

It is not a de Polignac number, because 154729229 - 2⁴ = 154729213 is a prime.

It is a super-2 number, since 2×154729229² = 47882268613868882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154729249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77364614 + 77364615.

It is an arithmetic number, because the mean of its divisors is an integer number (77364615).

Almost surely, 2^154729229 is an apocalyptic number.

It is an amenable number.

154729229 is a deficient number, since it is larger than the sum of its proper divisors (1).

154729229 is an equidigital number, since it uses as much as digits as its factorization.

154729229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 154729229 is about 12439.0204196311. The cubic root of 154729229 is about 536.8555582050.

The spelling of 154729229 in words is "one hundred fifty-four million, seven hundred twenty-nine thousand, two hundred twenty-nine".