51984551 has 8 divisors (see below), whose sum is σ = 56486400. Its totient is φ = 47659320.

The previous prime is 51984533. The next prime is 51984641. The reversal of 51984551 is 15548915.

51984551 = 885² + 886² + ... + 946².

51984551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51984551 - 2¹⁰ = 51983527 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 (51984151) 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 7 ways as a sum of consecutive naturals, for example, 43541 + ... + 44718.

It is an arithmetic number, because the mean of its divisors is an integer number (7060800).

Almost surely, 2^51984551 is an apocalyptic number.

51984551 is a deficient number, since it is larger than the sum of its proper divisors (4501849).

51984551 is a wasteful number, since it uses less digits than its factorization.

51984551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88309.

The product of its digits is 36000, while the sum is 38.

The square root of 51984551 is about 7210.0312759377. The cubic root of 51984551 is about 373.2141481969.

The spelling of 51984551 in words is "fifty-one million, nine hundred eighty-four thousand, five hundred fifty-one".