155280900 has 36 divisors (see below), whose sum is σ = 449280272. Its totient is φ = 41408160.

The previous prime is 155280887. The next prime is 155280911. The reversal of 155280900 is 9082551.

It is a super-3 number, since 3×155280900³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258502 + ... + 259101.

Almost surely, 2^155280900 is an apocalyptic number.

155280900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155280900 is an abundant number, since it is smaller than the sum of its proper divisors (293999372).

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

155280900 is a wasteful number, since it uses less digits than its factorization.

155280900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517620 (or 517613 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 155280900 is about 12461.1757069708. The cubic root of 155280900 is about 537.4928356716.

The spelling of 155280900 in words is "one hundred fifty-five million, two hundred eighty thousand, nine hundred".