155923222 has 16 divisors (see below), whose sum is σ = 287858592. Its totient is φ = 61683840.

The previous prime is 155923193. The next prime is 155923231. The reversal of 155923222 is 222329551.

It is a super-2 number, since 2×155923222² = 48624102317722568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 428179 + ... + 428542.

It is an arithmetic number, because the mean of its divisors is an integer number (17991162).

Almost surely, 2^155923222 is an apocalyptic number.

155923222 is a deficient number, since it is larger than the sum of its proper divisors (131935370).

155923222 is a wasteful number, since it uses less digits than its factorization.

155923222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856743.

The product of its digits is 10800, while the sum is 31.

The square root of 155923222 is about 12486.9220386771. The cubic root of 155923222 is about 538.2329321227.

The spelling of 155923222 in words is "one hundred fifty-five million, nine hundred twenty-three thousand, two hundred twenty-two".