51668177 has 4 divisors (see below), whose sum is σ = 56365296. Its totient is φ = 46971060.

The previous prime is 51668131. The next prime is 51668207. The reversal of 51668177 is 77186615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51668177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51668377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2348543 + ... + 2348564.

It is an arithmetic number, because the mean of its divisors is an integer number (14091324).

Almost surely, 2^51668177 is an apocalyptic number.

It is an amenable number.

51668177 is a deficient number, since it is larger than the sum of its proper divisors (4697119).

51668177 is a wasteful number, since it uses less digits than its factorization.

51668177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4697118.

The product of its digits is 70560, while the sum is 41.

The square root of 51668177 is about 7188.0579435617. The cubic root of 51668177 is about 372.4554894791.

The spelling of 51668177 in words is "fifty-one million, six hundred sixty-eight thousand, one hundred seventy-seven".