43340155 has 4 divisors (see below), whose sum is σ = 52008192. Its totient is φ = 34672120.

The previous prime is 43340153. The next prime is 43340177. The reversal of 43340155 is 55104334.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55104334 = 2 ⋅27552167.

It is not a de Polignac number, because 43340155 - 2¹ = 43340153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43340153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4334011 + ... + 4334020.

It is an arithmetic number, because the mean of its divisors is an integer number (13002048).

Almost surely, 2^43340155 is an apocalyptic number.

43340155 is a deficient number, since it is larger than the sum of its proper divisors (8668037).

43340155 is an equidigital number, since it uses as much as digits as its factorization.

43340155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8668036.

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

The square root of 43340155 is about 6583.3240084322. The cubic root of 43340155 is about 351.2611779475.

Adding to 43340155 its reverse (55104334), we get a palindrome (98444489).

The spelling of 43340155 in words is "forty-three million, three hundred forty thousand, one hundred fifty-five".