155636227 has 2 divisors, whose sum is σ = 155636228. Its totient is φ = 155636226.

The previous prime is 155636203. The next prime is 155636231. The reversal of 155636227 is 722636551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155636227 - 2⁷ = 155636099 is a prime.

It is not a weakly prime, because it can be changed into another prime (155636237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77818113 + 77818114.

It is an arithmetic number, because the mean of its divisors is an integer number (77818114).

Almost surely, 2^155636227 is an apocalyptic number.

155636227 is a deficient number, since it is larger than the sum of its proper divisors (1).

155636227 is an equidigital number, since it uses as much as digits as its factorization.

155636227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 155636227 is about 12475.4249226229. The cubic root of 155636227 is about 537.9025023362.

The spelling of 155636227 in words is "one hundred fifty-five million, six hundred thirty-six thousand, two hundred twenty-seven".