51955535580 has 48 divisors (see below), whose sum is σ = 156665925024. Its totient is φ = 12789054720.

The previous prime is 51955535579. The next prime is 51955535581. The reversal of 51955535580 is 8553555915.

It is an interprime number because it is at equal distance from previous prime (51955535579) and next prime (51955535581).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51955535581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33304051 + ... + 33305610.

It is an arithmetic number, because the mean of its divisors is an integer number (3263873438).

Almost surely, 2^51955535580 is an apocalyptic number.

It is an amenable number.

51955535580 is an abundant number, since it is smaller than the sum of its proper divisors (104710389444).

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

51955535580 is a wasteful number, since it uses less digits than its factorization.

51955535580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66609686 (or 66609684 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 51955535580 in words is "fifty-one billion, nine hundred fifty-five million, five hundred thirty-five thousand, five hundred eighty".