155223119 has 2 divisors, whose sum is σ = 155223120. Its totient is φ = 155223118.

The previous prime is 155223097. The next prime is 155223127. The reversal of 155223119 is 911322551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155223119 - 2²⁴ = 138445903 is a prime.

It is a super-2 number, since 2×155223119² = 48188433344176322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 155223091 and 155223100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155226119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77611559 + 77611560.

It is an arithmetic number, because the mean of its divisors is an integer number (77611560).

Almost surely, 2^155223119 is an apocalyptic number.

155223119 is a deficient number, since it is larger than the sum of its proper divisors (1).

155223119 is an equidigital number, since it uses as much as digits as its factorization.

155223119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 29.

The square root of 155223119 is about 12458.8570503076. The cubic root of 155223119 is about 537.4261592452.

The spelling of 155223119 in words is "one hundred fifty-five million, two hundred twenty-three thousand, one hundred nineteen".