51680258 has 8 divisors (see below), whose sum is σ = 88594752. Its totient is φ = 22148676.

The previous prime is 51680243. The next prime is 51680263. The reversal of 51680258 is 85208615.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1845710 + ... + 1845737.

It is an arithmetic number, because the mean of its divisors is an integer number (11074344).

Almost surely, 2^51680258 is an apocalyptic number.

51680258 is a deficient number, since it is larger than the sum of its proper divisors (36914494).

51680258 is a wasteful number, since it uses less digits than its factorization.

51680258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691456.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 51680258 is about 7188.8982466022. The cubic root of 51680258 is about 372.4845162700.

The spelling of 51680258 in words is "fifty-one million, six hundred eighty thousand, two hundred fifty-eight".