155561150 has 12 divisors (see below), whose sum is σ = 289343832. Its totient is φ = 62224440.

The previous prime is 155561137. The next prime is 155561179. The reversal of 155561150 is 51165551.

It is a happy number.

155561150 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1555562 + ... + 1555661.

It is an arithmetic number, because the mean of its divisors is an integer number (24111986).

Almost surely, 2^155561150 is an apocalyptic number.

155561150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155561150 is a deficient number, since it is larger than the sum of its proper divisors (133782682).

155561150 is a wasteful number, since it uses less digits than its factorization.

155561150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111235 (or 3111230 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 155561150 is about 12472.4155639555. The cubic root of 155561150 is about 537.8159959096.

The spelling of 155561150 in words is "one hundred fifty-five million, five hundred sixty-one thousand, one hundred fifty".