155011043 has 6 divisors (see below), whose sum is σ = 170384172. Its totient is φ = 140919020.

The previous prime is 155011009. The next prime is 155011057. The reversal of 155011043 is 340110551.

It is not a de Polignac number, because 155011043 - 2¹⁰ = 155010019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155011243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 640421 + ... + 640662.

It is an arithmetic number, because the mean of its divisors is an integer number (28397362).

Almost surely, 2^155011043 is an apocalyptic number.

155011043 is a deficient number, since it is larger than the sum of its proper divisors (15373129).

155011043 is a wasteful number, since it uses less digits than its factorization.

155011043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281105 (or 1281094 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 155011043 is about 12450.3430876422. The cubic root of 155011043 is about 537.1812920779.

Adding to 155011043 its reverse (340110551), we get a palindrome (495121594).

The spelling of 155011043 in words is "one hundred fifty-five million, eleven thousand, forty-three".