43620055 has 16 divisors (see below), whose sum is σ = 53535744. Its totient is φ = 34110720.

The previous prime is 43620053. The next prime is 43620061. The reversal of 43620055 is 55002634.

It is not a de Polignac number, because 43620055 - 2¹ = 43620053 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 (43620053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45885 + ... + 46825.

It is an arithmetic number, because the mean of its divisors is an integer number (3345984).

Almost surely, 2^43620055 is an apocalyptic number.

43620055 is a deficient number, since it is larger than the sum of its proper divisors (9915689).

43620055 is a wasteful number, since it uses less digits than its factorization.

43620055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 43620055 is about 6604.5480541821. The cubic root of 43620055 is about 352.0157292171.

Adding to 43620055 its reverse (55002634), we get a palindrome (98622689).

The spelling of 43620055 in words is "forty-three million, six hundred twenty thousand, fifty-five".