155233555 has 16 divisors (see below), whose sum is σ = 198054720. Its totient is φ = 116541568.

The previous prime is 155233541. The next prime is 155233577. The reversal of 155233555 is 555332551.

It is a cyclic number.

It is not a de Polignac number, because 155233555 - 2⁷ = 155233427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155233555.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6640 + ... + 18829.

It is an arithmetic number, because the mean of its divisors is an integer number (12378420).

Almost surely, 2^155233555 is an apocalyptic number.

155233555 is a deficient number, since it is larger than the sum of its proper divisors (42821165).

155233555 is a wasteful number, since it uses less digits than its factorization.

155233555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25550.

The product of its digits is 56250, while the sum is 34.

The square root of 155233555 is about 12459.2758617827. The cubic root of 155233555 is about 537.4382030991.

The spelling of 155233555 in words is "one hundred fifty-five million, two hundred thirty-three thousand, five hundred fifty-five".