155166880 has 96 divisors (see below), whose sum is σ = 403558848. Its totient is φ = 55910400.

The previous prime is 155166857. The next prime is 155166883. The reversal of 155166880 is 88661551.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (155166883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230224 + ... + 230896.

It is an arithmetic number, because the mean of its divisors is an integer number (4203738).

Almost surely, 2^155166880 is an apocalyptic number.

155166880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155166880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201779424).

155166880 is an abundant number, since it is smaller than the sum of its proper divisors (248391968).

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

155166880 is a wasteful number, since it uses less digits than its factorization.

155166880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 155166880 is about 12456.5998571039. The cubic root of 155166880 is about 537.3612463188.

The spelling of 155166880 in words is "one hundred fifty-five million, one hundred sixty-six thousand, eight hundred eighty".