51555053108 has 24 divisors (see below), whose sum is σ = 100511843880. Its totient is φ = 22974134400.

The previous prime is 51555053101. The next prime is 51555053113. The reversal of 51555053108 is 80135055515.

It can be written as a sum of positive squares in 4 ways, for example, as 2988590224 + 48566462884 = 54668^2 + 220378^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51555053101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17092343 + ... + 17095358.

It is an arithmetic number, because the mean of its divisors is an integer number (4187993495).

Almost surely, 2^51555053108 is an apocalyptic number.

51555053108 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

51555053108 is a deficient number, since it is larger than the sum of its proper divisors (48956790772).

51555053108 is a wasteful number, since it uses less digits than its factorization.

51555053108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34187747 (or 34187745 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 38.

The spelling of 51555053108 in words is "fifty-one billion, five hundred fifty-five million, fifty-three thousand, one hundred eight".