155229760 has 168 divisors, whose sum is σ = 444983616. Its totient is φ = 50519040.

The previous prime is 155229757. The next prime is 155229769. The reversal of 155229760 is 67922551.

It is not an unprimeable number, because it can be changed into a prime (155229769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1184895 + ... + 1185025.

It is an arithmetic number, because the mean of its divisors is an integer number (2648712).

Almost surely, 2^155229760 is an apocalyptic number.

155229760 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 155229760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222491808).

155229760 is an abundant number, since it is smaller than the sum of its proper divisors (289753856).

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

155229760 is a wasteful number, since it uses less digits than its factorization.

155229760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 155229760 is about 12459.1235646814. The cubic root of 155229760 is about 537.4338234734.

The spelling of 155229760 in words is "one hundred fifty-five million, two hundred twenty-nine thousand, seven hundred sixty".