4072155 has 16 divisors (see below), whose sum is σ = 6541344. Its totient is φ = 2163200.

The previous prime is 4072147. The next prime is 4072171. The reversal of 4072155 is 5512704.

It is not a de Polignac number, because 4072155 - 2³ = 4072147 is a prime.

4072155 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5677 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (408834).

Almost surely, 2^4072155 is an apocalyptic number.

4072155 is a deficient number, since it is larger than the sum of its proper divisors (2469189).

4072155 is a wasteful number, since it uses less digits than its factorization.

4072155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 4072155 is about 2017.9581264238. The cubic root of 4072155 is about 159.6889137797.

Adding to 4072155 its reverse (5512704), we get a palindrome (9584859).

The spelling of 4072155 in words is "four million, seventy-two thousand, one hundred fifty-five".