51530035242 has 64 divisors (see below), whose sum is σ = 124874265600. Its totient is φ = 13847604480.

The previous prime is 51530035237. The next prime is 51530035303. The reversal of 51530035242 is 24253003515.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121359 + ... + 343202.

It is an arithmetic number, because the mean of its divisors is an integer number (1951160400).

Almost surely, 2^51530035242 is an apocalyptic number.

51530035242 is an abundant number, since it is smaller than the sum of its proper divisors (73344230358).

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

51530035242 is a wasteful number, since it uses less digits than its factorization.

51530035242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464731.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 51530035242 its reverse (24253003515), we get a palindrome (75783038757).

The spelling of 51530035242 in words is "fifty-one billion, five hundred thirty million, thirty-five thousand, two hundred forty-two".