155166120 has 48 divisors (see below), whose sum is σ = 504291060. Its totient is φ = 41377536.

The previous prime is 155166113. The next prime is 155166131. The reversal of 155166120 is 21661551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 149377284 + 5788836 = 12222^2 + 2406^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215149 + ... + 215868.

Almost surely, 2^155166120 is an apocalyptic number.

155166120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155166120 is an abundant number, since it is smaller than the sum of its proper divisors (349124940).

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

155166120 is a wasteful number, since it uses less digits than its factorization.

155166120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431034 (or 431027 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 155166120 is about 12456.5693511496. The cubic root of 155166120 is about 537.3603689941.

The spelling of 155166120 in words is "one hundred fifty-five million, one hundred sixty-six thousand, one hundred twenty".