155000043 has 36 divisors (see below), whose sum is σ = 257833368. Its totient is φ = 88974720.

The previous prime is 155000039. The next prime is 155000047. The reversal of 155000043 is 340000551.

It is an interprime number because it is at equal distance from previous prime (155000039) and next prime (155000047).

It is not a de Polignac number, because 155000043 - 2² = 155000039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155000047) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33571 + ... + 37907.

It is an arithmetic number, because the mean of its divisors is an integer number (7162038).

Almost surely, 2^155000043 is an apocalyptic number.

155000043 is a deficient number, since it is larger than the sum of its proper divisors (102833325).

155000043 is a wasteful number, since it uses less digits than its factorization.

155000043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392 (or 4370 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 155000043 is about 12449.9013249102. The cubic root of 155000043 is about 537.1685851681.

Adding to 155000043 its reverse (340000551), we get a palindrome (495000594).

The spelling of 155000043 in words is "one hundred fifty-five million, forty-three", and thus it is an aban number.