155321080 has 16 divisors (see below), whose sum is σ = 349472520. Its totient is φ = 62128416.

The previous prime is 155321057. The next prime is 155321123. The reversal of 155321080 is 80123551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1941474 + ... + 1941553.

Almost surely, 2^155321080 is an apocalyptic number.

155321080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155321080 is an abundant number, since it is smaller than the sum of its proper divisors (194151440).

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

155321080 is a wasteful number, since it uses less digits than its factorization.

155321080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883038 (or 3883034 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 155321080 is about 12462.7878101170. The cubic root of 155321080 is about 537.5391916618.

The spelling of 155321080 in words is "one hundred fifty-five million, three hundred twenty-one thousand, eighty".