51984263 has 4 divisors (see below), whose sum is σ = 52001520. Its totient is φ = 51967008.

The previous prime is 51984259. The next prime is 51984271. The reversal of 51984263 is 36248915.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51984263 - 2² = 51984259 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 (51984293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2795 + ... + 10572.

It is an arithmetic number, because the mean of its divisors is an integer number (13000380).

Almost surely, 2^51984263 is an apocalyptic number.

51984263 is a deficient number, since it is larger than the sum of its proper divisors (17257).

51984263 is a wasteful number, since it uses less digits than its factorization.

51984263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17256.

The product of its digits is 51840, while the sum is 38.

The square root of 51984263 is about 7210.0113037359. The cubic root of 51984263 is about 373.2134589801.

The spelling of 51984263 in words is "fifty-one million, nine hundred eighty-four thousand, two hundred sixty-three".