155400100 has 36 divisors (see below), whose sum is σ = 342946800. Its totient is φ = 61104160.

The previous prime is 155400079. The next prime is 155400109. The reversal of 155400100 is 1004551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155400109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7270 + ... + 19069.

It is an arithmetic number, because the mean of its divisors is an integer number (9526300).

Almost surely, 2^155400100 is an apocalyptic number.

155400100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155400100 is an abundant number, since it is smaller than the sum of its proper divisors (187546700).

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

155400100 is a wasteful number, since it uses less digits than its factorization.

155400100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26412 (or 26405 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 155400100 is about 12465.9576447219. The cubic root of 155400100 is about 537.6303343572.

Adding to 155400100 its reverse (1004551), we get a palindrome (156404651).

The spelling of 155400100 in words is "one hundred fifty-five million, four hundred thousand, one hundred".