51273863 has 8 divisors (see below), whose sum is σ = 51882768. Its totient is φ = 50667904.

The previous prime is 51273841. The next prime is 51273869. The reversal of 51273863 is 36837215.

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 51273863 - 2¹⁰ = 51272839 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 (51273869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65945 + ... + 66717.

It is an arithmetic number, because the mean of its divisors is an integer number (6485346).

Almost surely, 2^51273863 is an apocalyptic number.

51273863 is a deficient number, since it is larger than the sum of its proper divisors (608905).

51273863 is a wasteful number, since it uses less digits than its factorization.

51273863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473.

The product of its digits is 30240, while the sum is 35.

The square root of 51273863 is about 7160.5770018903. The cubic root of 51273863 is about 371.5055842633.

The spelling of 51273863 in words is "fifty-one million, two hundred seventy-three thousand, eight hundred sixty-three".