51055001005501 has 4 divisors (see below), whose sum is σ = 53742106321600. Its totient is φ = 48367895689404.

The previous prime is 51055001005457. The next prime is 51055001005543. The reversal of 51055001005501 is 10550010055015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51055001005501 - 2⁷ = 51055001005373 is a prime.

It is a super-2 number, since 2×51055001005501² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51055001005501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51055001005201) 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, 1343552658021 + ... + 1343552658058.

It is an arithmetic number, because the mean of its divisors is an integer number (13435526580400).

Almost surely, 2^{51055001005501} is an apocalyptic number.

It is an amenable number.

51055001005501 is a deficient number, since it is larger than the sum of its proper divisors (2687105316099).

51055001005501 is a wasteful number, since it uses less digits than its factorization.

51055001005501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687105316098.

The product of its (nonzero) digits is 3125, while the sum is 28.

The spelling of 51055001005501 in words is "fifty-one trillion, fifty-five billion, one million, five thousand, five hundred one".