51455453 has 4 divisors (see below), whose sum is σ = 58806240. Its totient is φ = 44104668.

The previous prime is 51455441. The next prime is 51455473. The reversal of 51455453 is 35455415.

51455453 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35455415 = 5 ⋅7091083.

It is a cyclic number.

It is not a de Polignac number, because 51455453 - 2²⁰ = 50406877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51455423) 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 3 ways as a sum of consecutive naturals, for example, 3675383 + ... + 3675396.

It is an arithmetic number, because the mean of its divisors is an integer number (14701560).

Almost surely, 2^51455453 is an apocalyptic number.

It is an amenable number.

51455453 is a deficient number, since it is larger than the sum of its proper divisors (7350787).

51455453 is an equidigital number, since it uses as much as digits as its factorization.

51455453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7350786.

The product of its digits is 30000, while the sum is 32.

The square root of 51455453 is about 7173.2456391790. The cubic root of 51455453 is about 371.9436386073.

The spelling of 51455453 in words is "fifty-one million, four hundred fifty-five thousand, four hundred fifty-three".