51240564155226 has 8 divisors (see below), whose sum is σ = 102481128310464. Its totient is φ = 17080188051740.

The previous prime is 51240564155197. The next prime is 51240564155227. The reversal of 51240564155226 is 62255146504215.

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

51240564155226 is an admirable number.

It is a super-2 number, since 2×51240564155226² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51240564155227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4270047012930 + ... + 4270047012941.

It is an arithmetic number, because the mean of its divisors is an integer number (12810141038808).

Almost surely, 2^{51240564155226} is an apocalyptic number.

51240564155226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51240564155226 is a wasteful number, since it uses less digits than its factorization.

51240564155226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8540094025876.

The product of its (nonzero) digits is 2880000, while the sum is 48.

The spelling of 51240564155226 in words is "fifty-one trillion, two hundred forty billion, five hundred sixty-four million, one hundred fifty-five thousand, two hundred twenty-six".