155434127 has 2 divisors, whose sum is σ = 155434128. Its totient is φ = 155434126.

The previous prime is 155434091. The next prime is 155434129. The reversal of 155434127 is 721434551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155434127 - 2²⁴ = 138656911 is a prime.

Together with 155434129, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 155434093 and 155434102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155434129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77717063 + 77717064.

It is an arithmetic number, because the mean of its divisors is an integer number (77717064).

Almost surely, 2^155434127 is an apocalyptic number.

155434127 is a deficient number, since it is larger than the sum of its proper divisors (1).

155434127 is an equidigital number, since it uses as much as digits as its factorization.

155434127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 32.

The square root of 155434127 is about 12467.3223668918. The cubic root of 155434127 is about 537.6695720246.

Adding to 155434127 its reverse (721434551), we get a palindrome (876868678).

The spelling of 155434127 in words is "one hundred fifty-five million, four hundred thirty-four thousand, one hundred twenty-seven".