51005601055 has 8 divisors (see below), whose sum is σ = 61208370000. Its totient is φ = 40803381696.

The previous prime is 51005601029. The next prime is 51005601079. The reversal of 51005601055 is 55010650015.

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

It is a cyclic number.

It is not a de Polignac number, because 51005601055 - 2¹⁵ = 51005568287 is a prime.

It is a super-2 number, since 2×51005601055² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105976 + ... + 336514.

It is an arithmetic number, because the mean of its divisors is an integer number (7651046250).

Almost surely, 2^51005601055 is an apocalyptic number.

51005601055 is a deficient number, since it is larger than the sum of its proper divisors (10202768945).

51005601055 is a wasteful number, since it uses less digits than its factorization.

51005601055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274793.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 51005601055 in words is "fifty-one billion, five million, six hundred one thousand, fifty-five".