155404500 has 96 divisors (see below), whose sum is σ = 455355264. Its totient is φ = 41184000.

The previous prime is 155404499. The next prime is 155404511. The reversal of 155404500 is 5404551.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469335 + ... + 469665.

It is an arithmetic number, because the mean of its divisors is an integer number (4743284).

Almost surely, 2^155404500 is an apocalyptic number.

155404500 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 155404500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227677632).

155404500 is an abundant number, since it is smaller than the sum of its proper divisors (299950764).

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

155404500 is a wasteful number, since it uses less digits than its factorization.

155404500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 155404500 is about 12466.1341240980. The cubic root of 155404500 is about 537.6354084662.

The spelling of 155404500 in words is "one hundred fifty-five million, four hundred four thousand, five hundred".