51225430 has 16 divisors (see below), whose sum is σ = 92293200. Its totient is φ = 20470752.

The previous prime is 51225379. The next prime is 51225431. The reversal of 51225430 is 3452215.

51225430 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 (51225431) 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, 13837 + ... + 17143.

It is an arithmetic number, because the mean of its divisors is an integer number (5768325).

Almost surely, 2^51225430 is an apocalyptic number.

51225430 is a deficient number, since it is larger than the sum of its proper divisors (41067770).

51225430 is a wasteful number, since it uses less digits than its factorization.

51225430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51225430 is about 7157.1942826781. The cubic root of 51225430 is about 371.3885733908.

Adding to 51225430 its reverse (3452215), we get a palindrome (54677645).

The spelling of 51225430 in words is "fifty-one million, two hundred twenty-five thousand, four hundred thirty".