51296961 has 4 divisors (see below), whose sum is σ = 68395952. Its totient is φ = 34197972.

The previous prime is 51296957. The next prime is 51296983. The reversal of 51296961 is 16969215.

51296961 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51296961 - 2² = 51296957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51296261) 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, 8549491 + ... + 8549496.

It is an arithmetic number, because the mean of its divisors is an integer number (17098988).

Almost surely, 2^51296961 is an apocalyptic number.

It is an amenable number.

51296961 is a deficient number, since it is larger than the sum of its proper divisors (17098991).

51296961 is a wasteful number, since it uses less digits than its factorization.

51296961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17098990.

The product of its digits is 29160, while the sum is 39.

The square root of 51296961 is about 7162.1896791414. The cubic root of 51296961 is about 371.5613615299.

It can be divided in two parts, 5129 and 6961, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 51296961 in words is "fifty-one million, two hundred ninety-six thousand, nine hundred sixty-one".