7872755 has 8 divisors (see below), whose sum is σ = 10306224. Its totient is φ = 5725600.

The previous prime is 7872731. The next prime is 7872757. The reversal of 7872755 is 5572787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-7872755 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7872757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71516 + ... + 71625.

It is an arithmetic number, because the mean of its divisors is an integer number (1288278).

Almost surely, 2^7872755 is an apocalyptic number.

7872755 is a deficient number, since it is larger than the sum of its proper divisors (2433469).

7872755 is a wasteful number, since it uses less digits than its factorization.

7872755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143157.

The product of its digits is 137200, while the sum is 41.

The square root of 7872755 is about 2805.8430105763. The cubic root of 7872755 is about 198.9339528129.

Subtracting from 7872755 its reverse (5572787), we obtain a cube (2299968 = 132³).

The spelling of 7872755 in words is "seven million, eight hundred seventy-two thousand, seven hundred fifty-five".