55291359312 has 270 divisors, whose sum is σ = 188181693882. Its totient is φ = 15109661952.

The previous prime is 55291359307. The next prime is 55291359337. The reversal of 55291359312 is 21395319255.

55291359312 is a `hidden beast` number, since 5 + 5 + 291 + 359 + 3 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42734812176 + 12556547136 = 206724^2 + 112056^2 .

It is a super-2 number, since 2×55291359312² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 3725218 + ... + 3740030.

Almost surely, 2^55291359312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55291359312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94090846941).

55291359312 is an abundant number, since it is smaller than the sum of its proper divisors (132890334570).

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

55291359312 is a wasteful number, since it uses less digits than its factorization.

55291359312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14887 (or 14848 counting only the distinct ones).

The product of its digits is 364500, while the sum is 45.

The spelling of 55291359312 in words is "fifty-five billion, two hundred ninety-one million, three hundred fifty-nine thousand, three hundred twelve".