51630235 has 16 divisors (see below), whose sum is σ = 63136800. Its totient is φ = 40525056.

The previous prime is 51630211. The next prime is 51630253. The reversal of 51630235 is 53203615.

It is a happy number.

51630235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51630235 - 2¹⁷ = 51499163 is a prime.

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, 69496 + ... + 70234.

It is an arithmetic number, because the mean of its divisors is an integer number (3946050).

Almost surely, 2^51630235 is an apocalyptic number.

51630235 is a deficient number, since it is larger than the sum of its proper divisors (11506565).

51630235 is a wasteful number, since it uses less digits than its factorization.

51630235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 51630235 is about 7185.4182202569. The cubic root of 51630235 is about 372.3642975207.

The spelling of 51630235 in words is "fifty-one million, six hundred thirty thousand, two hundred thirty-five".