51883919 has 4 divisors (see below), whose sum is σ = 52041000. Its totient is φ = 51726840.

The previous prime is 51883859. The next prime is 51883933. The reversal of 51883919 is 91938815.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51883919 is a prime.

It is a super-2 number, since 2×51883919² = 5383882101597122, which contains 22 as substring.

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 51883919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51883969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78044 + ... + 78705.

It is an arithmetic number, because the mean of its divisors is an integer number (13010250).

Almost surely, 2^51883919 is an apocalyptic number.

51883919 is a deficient number, since it is larger than the sum of its proper divisors (157081).

51883919 is a wasteful number, since it uses less digits than its factorization.

51883919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157080.

The product of its digits is 77760, while the sum is 44.

The square root of 51883919 is about 7203.0492848515. The cubic root of 51883919 is about 372.9731692517.

The spelling of 51883919 in words is "fifty-one million, eight hundred eighty-three thousand, nine hundred nineteen".