7872555 has 32 divisors (see below), whose sum is σ = 13847040. Its totient is φ = 3801600.

The previous prime is 7872541. The next prime is 7872559. The reversal of 7872555 is 5552787.

7872555 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7872555 - 2¹⁵ = 7839787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5955 + ... + 7155.

It is an arithmetic number, because the mean of its divisors is an integer number (432720).

Almost surely, 2^7872555 is an apocalyptic number.

7872555 is a deficient number, since it is larger than the sum of its proper divisors (5974485).

7872555 is a wasteful number, since it uses less digits than its factorization.

7872555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its digits is 98000, while the sum is 39.

The square root of 7872555 is about 2805.8073704373. The cubic root of 7872555 is about 198.9322682215.

The spelling of 7872555 in words is "seven million, eight hundred seventy-two thousand, five hundred fifty-five".