55857255040 has 32 divisors (see below), whose sum is σ = 133533751860. Its totient is φ = 22342901760.

The previous prime is 55857254987. The next prime is 55857255049. The reversal of 55857255040 is 4055275855.

It can be written as a sum of positive squares in 2 ways, for example, as 55835799616 + 21455424 = 236296^2 + 4632^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (55857255049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43637841 + ... + 43639120.

Almost surely, 2^55857255040 is an apocalyptic number.

It is an amenable number.

55857255040 is an abundant number, since it is smaller than the sum of its proper divisors (77676496820).

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

55857255040 is an equidigital number, since it uses as much as digits as its factorization.

55857255040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87276980 (or 87276968 counting only the distinct ones).

The product of its (nonzero) digits is 1400000, while the sum is 46.

The spelling of 55857255040 in words is "fifty-five billion, eight hundred fifty-seven million, two hundred fifty-five thousand, forty".