51402234 has 32 divisors (see below), whose sum is σ = 111605760. Its totient is φ = 15688512.

The previous prime is 51402193. The next prime is 51402251. The reversal of 51402234 is 43220415.

51402234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51402234.

It is an unprimeable number.

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, 7312 + ... + 12500.

It is an arithmetic number, because the mean of its divisors is an integer number (3487680).

Almost surely, 2^51402234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51402234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55802880).

51402234 is an abundant number, since it is smaller than the sum of its proper divisors (60203526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51402234 is a wasteful number, since it uses less digits than its factorization.

51402234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 51402234 is about 7169.5351313736. The cubic root of 51402234 is about 371.8153639181.

Adding to 51402234 its reverse (43220415), we get a palindrome (94622649).

The spelling of 51402234 in words is "fifty-one million, four hundred two thousand, two hundred thirty-four".