155566012 has 12 divisors (see below), whose sum is σ = 311132080. Its totient is φ = 66671136.

The previous prime is 155566009. The next prime is 155566069. The reversal of 155566012 is 210665551.

155566012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777937 + ... + 2777992.

Almost surely, 2^155566012 is an apocalyptic number.

It is an amenable number.

155566012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

155566012 is a wasteful number, since it uses less digits than its factorization.

155566012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555940 (or 5555938 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 155566012 is about 12472.6104725514. The cubic root of 155566012 is about 537.8215989241.

The spelling of 155566012 in words is "one hundred fifty-five million, five hundred sixty-six thousand, twelve".