155355556 has 12 divisors (see below), whose sum is σ = 271983600. Its totient is φ = 77645960.

The previous prime is 155355553. The next prime is 155355569. The reversal of 155355556 is 655553551.

It is not an unprimeable number, because it can be changed into a prime (155355553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5595 + ... + 18493.

It is an arithmetic number, because the mean of its divisors is an integer number (22665300).

Almost surely, 2^155355556 is an apocalyptic number.

It is an amenable number.

155355556 is a deficient number, since it is larger than the sum of its proper divisors (116628044).

155355556 is a wasteful number, since it uses less digits than its factorization.

155355556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15914 (or 15912 counting only the distinct ones).

The product of its digits is 281250, while the sum is 40.

The square root of 155355556 is about 12464.1708909979. The cubic root of 155355556 is about 537.5789605289.

The spelling of 155355556 in words is "one hundred fifty-five million, three hundred fifty-five thousand, five hundred fifty-six".