51168019 has 8 divisors (see below), whose sum is σ = 58741760. Its totient is φ = 43660296.

The previous prime is 51168017. The next prime is 51168023. The reversal of 51168019 is 91086115.

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 51168019 - 2¹ = 51168017 is a prime.

It is a super-2 number, since 2×51168019² = 5236332336768722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51168017) 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, 14829 + ... + 17950.

It is an arithmetic number, because the mean of its divisors is an integer number (7342720).

Almost surely, 2^51168019 is an apocalyptic number.

51168019 is a deficient number, since it is larger than the sum of its proper divisors (7573741).

51168019 is a wasteful number, since it uses less digits than its factorization.

51168019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33009.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 51168019 is about 7153.1824386073. The cubic root of 51168019 is about 371.2497767044.

The spelling of 51168019 in words is "fifty-one million, one hundred sixty-eight thousand, nineteen".