51225545534242 has 8 divisors (see below), whose sum is σ = 76839464299932. Its totient is φ = 25612390767600.

The previous prime is 51225545534231. The next prime is 51225545534329. The reversal of 51225545534242 is 24243554552215.

51225545534242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 51142364629321 + 83180904921 = 7151389^2 + 288411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 190832109 + ... + 191100352.

Almost surely, 2^{51225545534242} is an apocalyptic number.

51225545534242 is a deficient number, since it is larger than the sum of its proper divisors (25613918765690).

51225545534242 is a wasteful number, since it uses less digits than its factorization.

51225545534242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381999524.

The product of its digits is 9600000, while the sum is 49.

The spelling of 51225545534242 in words is "fifty-one trillion, two hundred twenty-five billion, five hundred forty-five million, five hundred thirty-four thousand, two hundred forty-two".