51055011420 has 96 divisors (see below), whose sum is σ = 164027275776. Its totient is φ = 11623200000.

The previous prime is 51055011407. The next prime is 51055011437. The reversal of 51055011420 is 2411055015.

It is a super-2 number, since 2×51055011420² (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 31 ways as a sum of consecutive naturals, for example, 136731 + ... + 347570.

It is an arithmetic number, because the mean of its divisors is an integer number (1708617456).

Almost surely, 2^51055011420 is an apocalyptic number.

It is an amenable number.

51055011420 is an abundant number, since it is smaller than the sum of its proper divisors (112972264356).

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

51055011420 is a wasteful number, since it uses less digits than its factorization.

51055011420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484571 (or 484569 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

Adding to 51055011420 its reverse (2411055015), we get a palindrome (53466066435).

The spelling of 51055011420 in words is "fifty-one billion, fifty-five million, eleven thousand, four hundred twenty".