5451806879 has 4 divisors (see below), whose sum is σ = 5451959376. Its totient is φ = 5451654384.

The previous prime is 5451806849. The next prime is 5451806881. The reversal of 5451806879 is 9786081545.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9786081545 = 5 ⋅1957216309.

It is a cyclic number.

It is not a de Polignac number, because 5451806879 - 2⁸ = 5451806623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5451806879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5451806839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9587 + ... + 104859.

It is an arithmetic number, because the mean of its divisors is an integer number (1362989844).

Almost surely, 2^5451806879 is an apocalyptic number.

5451806879 is a deficient number, since it is larger than the sum of its proper divisors (152497).

5451806879 is an equidigital number, since it uses as much as digits as its factorization.

5451806879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152496.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The square root of 5451806879 is about 73836.3520157923. The cubic root of 5451806879 is about 1760.0033228889.

The spelling of 5451806879 in words is "five billion, four hundred fifty-one million, eight hundred six thousand, eight hundred seventy-nine".