155057200 has 60 divisors (see below), whose sum is σ = 385399440. Its totient is φ = 59879680.

The previous prime is 155057159. The next prime is 155057207. The reversal of 155057200 is 2750551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (155057207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4917 + ... + 18283.

It is an arithmetic number, because the mean of its divisors is an integer number (6423324).

Almost surely, 2^155057200 is an apocalyptic number.

155057200 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 155057200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192699720).

155057200 is an abundant number, since it is smaller than the sum of its proper divisors (230342240).

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

155057200 is a wasteful number, since it uses less digits than its factorization.

155057200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13414 (or 13403 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 155057200 is about 12452.1965933726. The cubic root of 155057200 is about 537.2346048738.

The spelling of 155057200 in words is "one hundred fifty-five million, fifty-seven thousand, two hundred".