51076421 has 8 divisors (see below), whose sum is σ = 56483904. Its totient is φ = 45796320.

The previous prime is 51076379. The next prime is 51076433. The reversal of 51076421 is 12467015.

51076421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51076421 - 2¹⁸ = 50814277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51076481) 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 7 ways as a sum of consecutive naturals, for example, 31001 + ... + 32606.

It is an arithmetic number, because the mean of its divisors is an integer number (7060488).

Almost surely, 2^51076421 is an apocalyptic number.

It is an amenable number.

51076421 is a deficient number, since it is larger than the sum of its proper divisors (5407483).

51076421 is a wasteful number, since it uses less digits than its factorization.

51076421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63691.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 51076421 is about 7146.7769658777. The cubic root of 51076421 is about 371.0281144916.

The spelling of 51076421 in words is "fifty-one million, seventy-six thousand, four hundred twenty-one".