155400003 has 24 divisors (see below), whose sum is σ = 246005760. Its totient is φ = 93746160.

The previous prime is 155399957. The next prime is 155400017. The reversal of 155400003 is 300004551.

It is not a de Polignac number, because 155400003 - 2⁶ = 155399939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155400073) 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 23 ways as a sum of consecutive naturals, for example, 18558 + ... + 25596.

It is an arithmetic number, because the mean of its divisors is an integer number (10250240).

Almost surely, 2^155400003 is an apocalyptic number.

155400003 is a deficient number, since it is larger than the sum of its proper divisors (90605757).

155400003 is a wasteful number, since it uses less digits than its factorization.

155400003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7279 (or 7276 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 155400003 is about 12465.9537541257. The cubic root of 155400003 is about 537.6302224951.

Adding to 155400003 its reverse (300004551), we get a palindrome (455404554).

The spelling of 155400003 in words is "one hundred fifty-five million, four hundred thousand, three".