51680361 has 8 divisors (see below), whose sum is σ = 72533920. Its totient is φ = 32640192.

The previous prime is 51680351. The next prime is 51680371. The reversal of 51680361 is 16308615.

It is an interprime number because it is at equal distance from previous prime (51680351) and next prime (51680371).

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

It is not a de Polignac number, because 51680361 - 2¹¹ = 51678313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51680351) 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, 453280 + ... + 453393.

It is an arithmetic number, because the mean of its divisors is an integer number (9066740).

Almost surely, 2^51680361 is an apocalyptic number.

It is an amenable number.

51680361 is a deficient number, since it is larger than the sum of its proper divisors (20853559).

51680361 is a wasteful number, since it uses less digits than its factorization.

51680361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906695.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 51680361 is about 7188.9054104224. The cubic root of 51680361 is about 372.4847637268.

Adding to 51680361 its reverse (16308615), we get a palindrome (67988976).

The spelling of 51680361 in words is "fifty-one million, six hundred eighty thousand, three hundred sixty-one".