43512055 has 4 divisors (see below), whose sum is σ = 52214472. Its totient is φ = 34809640.

The previous prime is 43511953. The next prime is 43512059. The reversal of 43512055 is 55021534.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55021534 = 2 ⋅27510767.

It is not a de Polignac number, because 43512055 - 2⁷ = 43511927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43512059) 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, 4351201 + ... + 4351210.

It is an arithmetic number, because the mean of its divisors is an integer number (13053618).

Almost surely, 2^43512055 is an apocalyptic number.

43512055 is a deficient number, since it is larger than the sum of its proper divisors (8702417).

43512055 is an equidigital number, since it uses as much as digits as its factorization.

43512055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8702416.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 43512055 is about 6596.3668030212. The cubic root of 43512055 is about 351.7249675608.

Adding to 43512055 its reverse (55021534), we get a palindrome (98533589).

The spelling of 43512055 in words is "forty-three million, five hundred twelve thousand, fifty-five".