155013043 has 4 divisors (see below), whose sum is σ = 156518128. Its totient is φ = 153507960.

The previous prime is 155012981. The next prime is 155013071. The reversal of 155013043 is 340310551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155013043 - 2¹³ = 155004851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155013643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752388 + ... + 752593.

It is an arithmetic number, because the mean of its divisors is an integer number (39129532).

Almost surely, 2^155013043 is an apocalyptic number.

155013043 is a deficient number, since it is larger than the sum of its proper divisors (1505085).

155013043 is a wasteful number, since it uses less digits than its factorization.

155013043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505084.

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

The square root of 155013043 is about 12450.4234064549. The cubic root of 155013043 is about 537.1836023605.

Adding to 155013043 its reverse (340310551), we get a palindrome (495323594).

The spelling of 155013043 in words is "one hundred fifty-five million, thirteen thousand, forty-three".