51969959 has 8 divisors (see below), whose sum is σ = 54840240. Its totient is φ = 49113216.

The previous prime is 51969887. The next prime is 51969961. The reversal of 51969959 is 95996915.

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 51969959 - 2¹² = 51965863 is a prime.

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 51969959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51969059) 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 7 ways as a sum of consecutive naturals, for example, 5069 + ... + 11385.

It is an arithmetic number, because the mean of its divisors is an integer number (6855030).

Almost surely, 2^51969959 is an apocalyptic number.

51969959 is a deficient number, since it is larger than the sum of its proper divisors (2870281).

51969959 is a wasteful number, since it uses less digits than its factorization.

51969959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6769.

The product of its digits is 984150, while the sum is 53.

The square root of 51969959 is about 7209.0192814280. The cubic root of 51969959 is about 373.1792246771.

The spelling of 51969959 in words is "fifty-one million, nine hundred sixty-nine thousand, nine hundred fifty-nine".