51369559 has 8 divisors (see below), whose sum is σ = 54149040. Its totient is φ = 48597696.

The previous prime is 51369553. The next prime is 51369581. The reversal of 51369559 is 95596315.

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 51369559 - 2¹³ = 51361367 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 (51369553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16689 + ... + 19525.

It is an arithmetic number, because the mean of its divisors is an integer number (6768630).

Almost surely, 2^51369559 is an apocalyptic number.

51369559 is a deficient number, since it is larger than the sum of its proper divisors (2779481).

51369559 is a wasteful number, since it uses less digits than its factorization.

51369559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809.

The product of its digits is 182250, while the sum is 43.

The square root of 51369559 is about 7167.2560300299. The cubic root of 51369559 is about 371.7365629189.

The spelling of 51369559 in words is "fifty-one million, three hundred sixty-nine thousand, five hundred fifty-nine".