51680870 has 8 divisors (see below), whose sum is σ = 93025584. Its totient is φ = 20672344.

The previous prime is 51680843. The next prime is 51680879. The reversal of 51680870 is 7808615.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 51680870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51680879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2584034 + ... + 2584053.

It is an arithmetic number, because the mean of its divisors is an integer number (11628198).

Almost surely, 2^51680870 is an apocalyptic number.

51680870 is a deficient number, since it is larger than the sum of its proper divisors (41344714).

51680870 is a wasteful number, since it uses less digits than its factorization.

51680870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168094.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 51680870 is about 7188.9408121086. The cubic root of 51680870 is about 372.4859865905.

The spelling of 51680870 in words is "fifty-one million, six hundred eighty thousand, eight hundred seventy".