51680235 has 16 divisors (see below), whose sum is σ = 82799136. Its totient is φ = 27525888.

The previous prime is 51680197. The next prime is 51680243. The reversal of 51680235 is 53208615.

It is not a de Polignac number, because 51680235 - 2⁹ = 51679723 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12217 + ... + 15893.

It is an arithmetic number, because the mean of its divisors is an integer number (5174946).

Almost surely, 2^51680235 is an apocalyptic number.

51680235 is a deficient number, since it is larger than the sum of its proper divisors (31118901).

51680235 is a wasteful number, since it uses less digits than its factorization.

51680235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4622.

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

The square root of 51680235 is about 7188.8966469132. The cubic root of 51680235 is about 372.4844610127.

It can be divided in two parts, 51680 and 235, that added together give a palindrome (51915).

The spelling of 51680235 in words is "fifty-one million, six hundred eighty thousand, two hundred thirty-five".