155310223 has 2 divisors, whose sum is σ = 155310224. Its totient is φ = 155310222.

The previous prime is 155310203. The next prime is 155310227. The reversal of 155310223 is 322013551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155310223 - 2¹⁷ = 155179151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155310194 and 155310203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155310227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77655111 + 77655112.

It is an arithmetic number, because the mean of its divisors is an integer number (77655112).

Almost surely, 2^155310223 is an apocalyptic number.

155310223 is a deficient number, since it is larger than the sum of its proper divisors (1).

155310223 is an equidigital number, since it uses as much as digits as its factorization.

155310223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 155310223 is about 12462.3522258039. The cubic root of 155310223 is about 537.5266666416.

Adding to 155310223 its reverse (322013551), we get a palindrome (477323774).

The spelling of 155310223 in words is "one hundred fifty-five million, three hundred ten thousand, two hundred twenty-three".