51453873 has 20 divisors (see below), whose sum is σ = 77091520. Its totient is φ = 34200792.

The previous prime is 51453851. The next prime is 51453889. The reversal of 51453873 is 37835415.

51453873 is a `hidden beast` number, since 51 + 4 + 538 + 73 = 666.

51453873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51453873 - 2⁹ = 51453361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51453803) 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 19 ways as a sum of consecutive naturals, for example, 34836 + ... + 36282.

It is an arithmetic number, because the mean of its divisors is an integer number (3854576).

Almost surely, 2^51453873 is an apocalyptic number.

It is an amenable number.

51453873 is a deficient number, since it is larger than the sum of its proper divisors (25637647).

51453873 is a wasteful number, since it uses less digits than its factorization.

51453873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898 (or 1889 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 51453873 is about 7173.1355068756. The cubic root of 51453873 is about 371.9398315798.

It can be divided in two parts, 51453 and 873, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 51453873 in words is "fifty-one million, four hundred fifty-three thousand, eight hundred seventy-three".