155400080 has 40 divisors (see below), whose sum is σ = 394153344. Its totient is φ = 56508800.

The previous prime is 155400079. The next prime is 155400109. The reversal of 155400080 is 80004551.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87416 + ... + 89175.

Almost surely, 2^155400080 is an apocalyptic number.

155400080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155400080 is an abundant number, since it is smaller than the sum of its proper divisors (238753264).

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

155400080 is a wasteful number, since it uses less digits than its factorization.

155400080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176615 (or 176609 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 155400080 is about 12465.9568425372. The cubic root of 155400080 is about 537.6303112929.

The spelling of 155400080 in words is "one hundred fifty-five million, four hundred thousand, eighty".