51192951 has 4 divisors (see below), whose sum is σ = 68257272. Its totient is φ = 34128632.

The previous prime is 51192937. The next prime is 51192971. The reversal of 51192951 is 15929115.

It is a happy number.

51192951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51192951 - 2¹¹ = 51190903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51192931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8532156 + ... + 8532161.

It is an arithmetic number, because the mean of its divisors is an integer number (17064318).

Almost surely, 2^51192951 is an apocalyptic number.

51192951 is a deficient number, since it is larger than the sum of its proper divisors (17064321).

51192951 is a wasteful number, since it uses less digits than its factorization.

51192951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17064320.

The product of its digits is 4050, while the sum is 33.

The square root of 51192951 is about 7154.9249471955. The cubic root of 51192951 is about 371.3100649904.

The spelling of 51192951 in words is "fifty-one million, one hundred ninety-two thousand, nine hundred fifty-one".