51355021535601 has 16 divisors (see below), whose sum is σ = 81657673995264. Its totient is φ = 28069825435344.

The previous prime is 51355021535591. The next prime is 51355021535611. The reversal of 51355021535601 is 10653512055315.

51355021535601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51355021535591) and next prime (51355021535611).

It is not a de Polignac number, because 51355021535601 - 2¹⁷ = 51355021404529 is a prime.

It is a super-2 number, since 2×51355021535601² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51355021535611) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 53162547691 + ... + 53162548656.

It is an arithmetic number, because the mean of its divisors is an integer number (5103604624704).

Almost surely, 2^{51355021535601} is an apocalyptic number.

It is an amenable number.

51355021535601 is a deficient number, since it is larger than the sum of its proper divisors (30302652459663).

51355021535601 is a wasteful number, since it uses less digits than its factorization.

51355021535601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106325096380.

The product of its (nonzero) digits is 337500, while the sum is 42.

The spelling of 51355021535601 in words is "fifty-one trillion, three hundred fifty-five billion, twenty-one million, five hundred thirty-five thousand, six hundred one".