51196667 has 4 divisors (see below), whose sum is σ = 51265056. Its totient is φ = 51128280.

The previous prime is 51196637. The next prime is 51196669. The reversal of 51196667 is 76669115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76669115 = 5 ⋅15333823.

It is a cyclic number.

It is not a de Polignac number, because 51196667 - 2¹⁶ = 51131131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51196669) 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, 33059 + ... + 34572.

It is an arithmetic number, because the mean of its divisors is an integer number (12816264).

Almost surely, 2^51196667 is an apocalyptic number.

51196667 is a deficient number, since it is larger than the sum of its proper divisors (68389).

51196667 is an equidigital number, since it uses as much as digits as its factorization.

51196667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68388.

The product of its digits is 68040, while the sum is 41.

The square root of 51196667 is about 7155.1846237536. The cubic root of 51196667 is about 371.3190490061.

The spelling of 51196667 in words is "fifty-one million, one hundred ninety-six thousand, six hundred sixty-seven".