51659049 has 8 divisors (see below), whose sum is σ = 74177152. Its totient is φ = 31790160.

The previous prime is 51659033. The next prime is 51659053. The reversal of 51659049 is 94095615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51659049 - 2⁴ = 51659033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1324591 = 51659049 / (5 + 1 + 6 + 5 + 9 + 0 + 4 + 9).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51658998 and 51659016.

It is not an unprimeable number, because it can be changed into a prime (51659089) 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, 662257 + ... + 662334.

It is an arithmetic number, because the mean of its divisors is an integer number (9272144).

Almost surely, 2^51659049 is an apocalyptic number.

It is an amenable number.

51659049 is a deficient number, since it is larger than the sum of its proper divisors (22518103).

51659049 is a wasteful number, since it uses less digits than its factorization.

51659049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324607.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 51659049 is about 7187.4229735003. The cubic root of 51659049 is about 372.4335548046.

The spelling of 51659049 in words is "fifty-one million, six hundred fifty-nine thousand, forty-nine".