51680774 has 4 divisors (see below), whose sum is σ = 77521164. Its totient is φ = 25840386.

The previous prime is 51680771. The next prime is 51680843. The reversal of 51680774 is 47708615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47708615 = 5 ⋅9541723.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51680771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12920192 + ... + 12920195.

It is an arithmetic number, because the mean of its divisors is an integer number (19380291).

Almost surely, 2^51680774 is an apocalyptic number.

51680774 is a deficient number, since it is larger than the sum of its proper divisors (25840390).

51680774 is a wasteful number, since it uses less digits than its factorization.

51680774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25840389.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 51680774 is about 7188.9341351830. The cubic root of 51680774 is about 372.4857559528.

The spelling of 51680774 in words is "fifty-one million, six hundred eighty thousand, seven hundred seventy-four".