155506056 has 32 divisors (see below), whose sum is σ = 389119200. Its totient is φ = 51788160.

The previous prime is 155506037. The next prime is 155506063. The reversal of 155506056 is 650605551.

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 7 ways as a sum of consecutive naturals, for example, 32796 + ... + 37236.

It is an arithmetic number, because the mean of its divisors is an integer number (12159975).

Almost surely, 2^155506056 is an apocalyptic number.

It is an amenable number.

155506056 is an abundant number, since it is smaller than the sum of its proper divisors (233613144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155506056 is a wasteful number, since it uses less digits than its factorization.

155506056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5909 (or 5905 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 155506056 is about 12470.2067344531. The cubic root of 155506056 is about 537.7524969080.

The spelling of 155506056 in words is "one hundred fifty-five million, five hundred six thousand, fifty-six".