155503153 has 6 divisors (see below), whose sum is σ = 168385254. Its totient is φ = 143541216.

The previous prime is 155503151. The next prime is 155503171. The reversal of 155503153 is 351305551.

It can be written as a sum of positive squares in 3 ways, for example, as 5489649 + 150013504 = 2343^2 + 12248^2 .

It is not a de Polignac number, because 155503153 - 2¹ = 155503151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155503151) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 459900 + ... + 460237.

It is an arithmetic number, because the mean of its divisors is an integer number (28064209).

Almost surely, 2^155503153 is an apocalyptic number.

155503153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155503153 is a deficient number, since it is larger than the sum of its proper divisors (12882101).

155503153 is an equidigital number, since it uses as much as digits as its factorization.

155503153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920163 (or 920150 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 155503153 is about 12470.0903364811. The cubic root of 155503153 is about 537.7491506177.

The spelling of 155503153 in words is "one hundred fifty-five million, five hundred three thousand, one hundred fifty-three".