55404542256 has 240 divisors, whose sum is σ = 171825002496. Its totient is φ = 15330373632.

The previous prime is 55404542239. The next prime is 55404542273. The reversal of 55404542256 is 65224540455.

It is a happy number.

55404542256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55404542239) and next prime (55404542273).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10720185 + ... + 10725351.

Almost surely, 2^55404542256 is an apocalyptic number.

55404542256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55404542256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85912501248).

55404542256 is an abundant number, since it is smaller than the sum of its proper divisors (116420460240).

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

55404542256 is a wasteful number, since it uses less digits than its factorization.

55404542256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5336 (or 5323 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 55404542256 in words is "fifty-five billion, four hundred four million, five hundred forty-two thousand, two hundred fifty-six".