78451841 has 8 divisors (see below), whose sum is σ = 85748544. Its totient is φ = 71335440.

The previous prime is 78451831. The next prime is 78451853. The reversal of 78451841 is 14815487.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78451841 - 2¹⁰ = 78450817 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 78451795 and 78451804.

It is not an unprimeable number, because it can be changed into a prime (78451811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44165 + ... + 45906.

It is an arithmetic number, because the mean of its divisors is an integer number (10718568).

Almost surely, 2^78451841 is an apocalyptic number.

It is an amenable number.

78451841 is a deficient number, since it is larger than the sum of its proper divisors (7296703).

78451841 is a wasteful number, since it uses less digits than its factorization.

78451841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90151.

The product of its digits is 35840, while the sum is 38.

The square root of 78451841 is about 8857.3043867759. The cubic root of 78451841 is about 428.0893068508.

It can be divided in two parts, 784 and 51841, that added together give a palindrome (52625).

The spelling of 78451841 in words is "seventy-eight million, four hundred fifty-one thousand, eight hundred forty-one".