155212303 has 12 divisors (see below), whose sum is σ = 165037320. Its totient is φ = 145918256.

The previous prime is 155212301. The next prime is 155212331. The reversal of 155212303 is 303212551.

It is not a de Polignac number, because 155212303 - 2¹ = 155212301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155212301) 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 11 ways as a sum of consecutive naturals, for example, 28725 + ... + 33697.

It is an arithmetic number, because the mean of its divisors is an integer number (13753110).

Almost surely, 2^155212303 is an apocalyptic number.

155212303 is a deficient number, since it is larger than the sum of its proper divisors (9825017).

155212303 is an equidigital number, since it uses as much as digits as its factorization.

155212303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5078 (or 5055 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 155212303 is about 12458.4229740365. The cubic root of 155212303 is about 537.4136762758.

Adding to 155212303 its reverse (303212551), we get a palindrome (458424854).

The spelling of 155212303 in words is "one hundred fifty-five million, two hundred twelve thousand, three hundred three".