155548233 has 12 divisors (see below), whose sum is σ = 224808948. Its totient is φ = 103639680.

The previous prime is 155548213. The next prime is 155548277. The reversal of 155548233 is 332845551.

It can be written as a sum of positive squares in 2 ways, for example, as 33732864 + 121815369 = 5808^2 + 11037^2 .

It is not a de Polignac number, because 155548233 - 2⁵ = 155548201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155548213) 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, 16741 + ... + 24317.

It is an arithmetic number, because the mean of its divisors is an integer number (18734079).

Almost surely, 2^155548233 is an apocalyptic number.

It is an amenable number.

155548233 is a deficient number, since it is larger than the sum of its proper divisors (69260715).

155548233 is a wasteful number, since it uses less digits than its factorization.

155548233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9864 (or 9861 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 155548233 is about 12471.8977304980. The cubic root of 155548233 is about 537.8011096704.

The spelling of 155548233 in words is "one hundred fifty-five million, five hundred forty-eight thousand, two hundred thirty-three".