51319363 has 4 divisors (see below), whose sum is σ = 51376608. Its totient is φ = 51262120.

The previous prime is 51319351. The next prime is 51319369. The reversal of 51319363 is 36391315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36391315 = 5 ⋅7278263.

It is a cyclic number.

It is not a de Polignac number, because 51319363 - 2¹³ = 51311171 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51319369) 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 3 ways as a sum of consecutive naturals, for example, 27256 + ... + 29077.

It is an arithmetic number, because the mean of its divisors is an integer number (12844152).

Almost surely, 2^51319363 is an apocalyptic number.

51319363 is a deficient number, since it is larger than the sum of its proper divisors (57245).

51319363 is an equidigital number, since it uses as much as digits as its factorization.

51319363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57244.

The product of its digits is 7290, while the sum is 31.

The square root of 51319363 is about 7163.7534156335. The cubic root of 51319363 is about 371.6154420970.

The spelling of 51319363 in words is "fifty-one million, three hundred nineteen thousand, three hundred sixty-three".