51056061050501 has 24 divisors (see below), whose sum is σ = 59064295457160. Its totient is φ = 43858010161152.

The previous prime is 51056061050497. The next prime is 51056061050563. The reversal of 51056061050501 is 10505016065015.

It can be written as a sum of positive squares in 12 ways, for example, as 18288152896225 + 32767908154276 = 4276465^2 + 5724326^2 .

It is not a de Polignac number, because 51056061050501 - 2² = 51056061050497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51056061050591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76011596 + ... + 76680341.

It is an arithmetic number, because the mean of its divisors is an integer number (2461012310715).

Almost surely, 2^{51056061050501} is an apocalyptic number.

It is an amenable number.

51056061050501 is a deficient number, since it is larger than the sum of its proper divisors (8008234406659).

51056061050501 is a wasteful number, since it uses less digits than its factorization.

51056061050501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152692073 (or 152692056 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 51056061050501 in words is "fifty-one trillion, fifty-six billion, sixty-one million, fifty thousand, five hundred one".