7878451 has 8 divisors (see below), whose sum is σ = 9021024. Its totient is φ = 6740160.

The previous prime is 7878439. The next prime is 7878461. The reversal of 7878451 is 1548787.

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

It is not a de Polignac number, because 7878451 - 2⁵ = 7878419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7878421) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6081 + ... + 7261.

It is an arithmetic number, because the mean of its divisors is an integer number (1127628).

Almost surely, 2^7878451 is an apocalyptic number.

7878451 is a deficient number, since it is larger than the sum of its proper divisors (1142573).

7878451 is a wasteful number, since it uses less digits than its factorization.

7878451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141.

The product of its digits is 62720, while the sum is 40.

The square root of 7878451 is about 2806.8578517624. The cubic root of 7878451 is about 198.9819180055.

The spelling of 7878451 in words is "seven million, eight hundred seventy-eight thousand, four hundred fifty-one".