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155080 = 2353877
BaseRepresentation
bin100101110111001000
321212201201
4211313020
514430310
63153544
71214062
oct456710
9255651
10155080
11a6572
12758b4
1355783
1440732
1530e3a
hex25dc8

155080 has 16 divisors (see below), whose sum is σ = 349020. Its totient is φ = 62016.

The previous prime is 155069. The next prime is 155081. The reversal of 155080 is 80551.

155080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 148996 + 6084 = 386^2 + 78^2 .

It is not an unprimeable number, because it can be changed into a prime (155081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1899 + ... + 1978.

2155080 is an apocalyptic number.

155080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155080 is an abundant number, since it is smaller than the sum of its proper divisors (193940).

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

155080 is a wasteful number, since it uses less digits than its factorization.

155080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888 (or 3884 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 155080 is about 393.8019806959. The cubic root of 155080 is about 53.7260935692.

Subtracting from 155080 its reverse (80551), we obtain a square (74529 = 2732).

The spelling of 155080 in words is "one hundred fifty-five thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 3877 7754 15508 19385 31016 38770 77540 155080