155222263 has 8 divisors (see below), whose sum is σ = 177532928. Its totient is φ = 132945624.

The previous prime is 155222261. The next prime is 155222299. The reversal of 155222263 is 362222551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155222263 - 2¹ = 155222261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155222261) 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 in 7 ways as a sum of consecutive naturals, for example, 2170 + ... + 17752.

It is an arithmetic number, because the mean of its divisors is an integer number (22191616).

Almost surely, 2^155222263 is an apocalyptic number.

155222263 is a deficient number, since it is larger than the sum of its proper divisors (22310665).

155222263 is a wasteful number, since it uses less digits than its factorization.

155222263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17013.

The product of its digits is 7200, while the sum is 28.

The square root of 155222263 is about 12458.8226971893. The cubic root of 155222263 is about 537.4251713390.

The spelling of 155222263 in words is "one hundred fifty-five million, two hundred twenty-two thousand, two hundred sixty-three".