43155450 has 96 divisors (see below), whose sum is σ = 128116800. Its totient is φ = 10618560.

The previous prime is 43155439. The next prime is 43155457. The reversal of 43155450 is 5455134.

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

It is not an unprimeable number, because it can be changed into a prime (43155457) 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 47 ways as a sum of consecutive naturals, for example, 16321 + ... + 18779.

It is an arithmetic number, because the mean of its divisors is an integer number (1334550).

Almost surely, 2^43155450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43155450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64058400).

43155450 is an abundant number, since it is smaller than the sum of its proper divisors (84961350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43155450 is a wasteful number, since it uses less digits than its factorization.

43155450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493 (or 2482 counting only the distinct ones).

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

The square root of 43155450 is about 6569.2807825515. The cubic root of 43155450 is about 350.7614713684.

The spelling of 43155450 in words is "forty-three million, one hundred fifty-five thousand, four hundred fifty".