51680797 has 8 divisors (see below), whose sum is σ = 60437696. Its totient is φ = 43267392.

The previous prime is 51680771. The next prime is 51680843. The reversal of 51680797 is 79708615.

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

It is not a de Polignac number, because 51680797 - 2⁷ = 51680669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51680737) 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, 85548 + ... + 86149.

It is an arithmetic number, because the mean of its divisors is an integer number (7554712).

Almost surely, 2^51680797 is an apocalyptic number.

It is an amenable number.

51680797 is a deficient number, since it is larger than the sum of its proper divisors (8756899).

51680797 is a wasteful number, since it uses less digits than its factorization.

51680797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171747.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 51680797 is about 7188.9357348637. The cubic root of 51680797 is about 372.4858112098.

The spelling of 51680797 in words is "fifty-one million, six hundred eighty thousand, seven hundred ninety-seven".