155034243 has 128 divisors (see below), whose sum is σ = 308582400. Its totient is φ = 75582720.

The previous prime is 155034233. The next prime is 155034259. The reversal of 155034243 is 342430551.

It is not a de Polignac number, because 155034243 - 2⁶ = 155034179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (155034233) 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 127 ways as a sum of consecutive naturals, for example, 3781303 + ... + 3781343.

It is an arithmetic number, because the mean of its divisors is an integer number (2410800).

Almost surely, 2^155034243 is an apocalyptic number.

155034243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155034243 is a deficient number, since it is larger than the sum of its proper divisors (153548157).

155034243 is an equidigital number, since it uses as much as digits as its factorization.

155034243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 155034243 is about 12451.2747540162. The cubic root of 155034243 is about 537.2080901348.

Adding to 155034243 its reverse (342430551), we get a palindrome (497464794).

The spelling of 155034243 in words is "one hundred fifty-five million, thirty-four thousand, two hundred forty-three".