43155045 has 64 divisors (see below), whose sum is σ = 80985600. Its totient is φ = 21772800.

The previous prime is 43155041. The next prime is 43155053. The reversal of 43155045 is 54055134.

It is not a de Polignac number, because 43155045 - 2² = 43155041 is a prime.

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 (43155041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 285720 + ... + 285870.

It is an arithmetic number, because the mean of its divisors is an integer number (1265400).

Almost surely, 2^43155045 is an apocalyptic number.

43155045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43155045 is the 3285-th decagonal number.

It is an amenable number.

43155045 is a deficient number, since it is larger than the sum of its proper divisors (37830555).

43155045 is a wasteful number, since it uses less digits than its factorization.

43155045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 261 counting only the distinct ones).

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

The square root of 43155045 is about 6569.2499571869. The cubic root of 43155045 is about 350.7603741038.

The spelling of 43155045 in words is "forty-three million, one hundred fifty-five thousand, forty-five".