43145055 has 20 divisors (see below), whose sum is σ = 77342232. Its totient is φ = 23010480.

The previous prime is 43145051. The next prime is 43145057. The reversal of 43145055 is 55054134.

It is not a de Polignac number, because 43145055 - 2² = 43145051 is a prime.

It is a super-2 number, since 2×43145055² = 3722991541906050, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43145051) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52861 + ... + 53670.

Almost surely, 2^43145055 is an apocalyptic number.

43145055 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43145055 is a deficient number, since it is larger than the sum of its proper divisors (34197177).

43145055 is a wasteful number, since it uses less digits than its factorization.

43145055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106548 (or 106539 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 43145055 is about 6568.4895524009. The cubic root of 43145055 is about 350.7333060707.

Adding to 43145055 its reverse (55054134), we get a palindrome (98199189).

The spelling of 43145055 in words is "forty-three million, one hundred forty-five thousand, fifty-five".