155455000 has 40 divisors (see below), whose sum is σ = 364242780. Its totient is φ = 62180000.

The previous prime is 155454983. The next prime is 155455007. The reversal of 155455000 is 554551.

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

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155455007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10546 + ... + 20545.

Almost surely, 2^155455000 is an apocalyptic number.

155455000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155455000 is an abundant number, since it is smaller than the sum of its proper divisors (208787780).

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

155455000 is an equidigital number, since it uses as much as digits as its factorization.

155455000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31117 (or 31098 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 155455000 is about 12468.1594471678. The cubic root of 155455000 is about 537.6936385426.

The spelling of 155455000 in words is "one hundred fifty-five million, four hundred fifty-five thousand".