7872455 has 4 divisors (see below), whose sum is σ = 9446952. Its totient is φ = 6297960.

The previous prime is 7872443. The next prime is 7872521. The reversal of 7872455 is 5542787.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7872455 - 2⁴ = 7872439 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787241 + ... + 787250.

It is an arithmetic number, because the mean of its divisors is an integer number (2361738).

Almost surely, 2^7872455 is an apocalyptic number.

7872455 is a deficient number, since it is larger than the sum of its proper divisors (1574497).

7872455 is a wasteful number, since it uses less digits than its factorization.

7872455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574496.

The product of its digits is 78400, while the sum is 38.

The square root of 7872455 is about 2805.7895501979. The cubic root of 7872455 is about 198.9314259151.

The spelling of 7872455 in words is "seven million, eight hundred seventy-two thousand, four hundred fifty-five".