51680253 has 8 divisors (see below), whose sum is σ = 69681600. Its totient is φ = 34066208.

The previous prime is 51680243. The next prime is 51680263. The reversal of 51680253 is 35208615.

It is an interprime number because it is at equal distance from previous prime (51680243) and next prime (51680263).

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 51680253 - 2⁸ = 51679997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51680253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51680243) 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, 96513 + ... + 97046.

It is an arithmetic number, because the mean of its divisors is an integer number (8710200).

Almost surely, 2^51680253 is an apocalyptic number.

It is an amenable number.

51680253 is a deficient number, since it is larger than the sum of its proper divisors (18001347).

51680253 is a wasteful number, since it uses less digits than its factorization.

51680253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193651.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 51680253 is about 7188.8978988437. The cubic root of 51680253 is about 372.4845042576.

Adding to 51680253 its reverse (35208615), we get a palindrome (86888868).

The spelling of 51680253 in words is "fifty-one million, six hundred eighty thousand, two hundred fifty-three".