51180049 has 8 divisors (see below), whose sum is σ = 51738408. Its totient is φ = 50624640.

The previous prime is 51180011. The next prime is 51180067. The reversal of 51180049 is 94008115.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15563025 + 35617024 = 3945^2 + 5968^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51180049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51179999 and 51180026.

It is not an unprimeable number, because it can be changed into a prime (51180089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53919 + ... + 54859.

It is an arithmetic number, because the mean of its divisors is an integer number (6467301).

Almost surely, 2^51180049 is an apocalyptic number.

It is an amenable number.

51180049 is a deficient number, since it is larger than the sum of its proper divisors (558359).

51180049 is a wasteful number, since it uses less digits than its factorization.

51180049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 51180049 is about 7154.0232736552. The cubic root of 51180049 is about 371.2788689964.

The spelling of 51180049 in words is "fifty-one million, one hundred eighty thousand, forty-nine".