51421006 has 32 divisors (see below), whose sum is σ = 95316480. Its totient is φ = 20259936.

The previous prime is 51421001. The next prime is 51421043. The reversal of 51421006 is 60012415.

51421006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51421001) 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 15 ways as a sum of consecutive naturals, for example, 64945 + ... + 65731.

It is an arithmetic number, because the mean of its divisors is an integer number (2978640).

Almost surely, 2^51421006 is an apocalyptic number.

51421006 is a deficient number, since it is larger than the sum of its proper divisors (43895474).

51421006 is a wasteful number, since it uses less digits than its factorization.

51421006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 51421006 is about 7170.8441623006. The cubic root of 51421006 is about 371.8606205018.

The spelling of 51421006 in words is "fifty-one million, four hundred twenty-one thousand, six".