51166053451 has 4 divisors (see below), whose sum is σ = 51166870600. Its totient is φ = 51165236304.

The previous prime is 51166053409. The next prime is 51166053457. The reversal of 51166053451 is 15435066115.

51166053451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51166053451 - 2⁹ = 51166052939 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 51166053451.

It is not an unprimeable number, because it can be changed into a prime (51166053457) 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, 306081 + ... + 442738.

It is an arithmetic number, because the mean of its divisors is an integer number (12791717650).

Almost surely, 2^51166053451 is an apocalyptic number.

51166053451 is a deficient number, since it is larger than the sum of its proper divisors (817149).

51166053451 is an equidigital number, since it uses as much as digits as its factorization.

51166053451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817148.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 51166053451 in words is "fifty-one billion, one hundred sixty-six million, fifty-three thousand, four hundred fifty-one".