55464003540 has 144 divisors (see below), whose sum is σ = 184937328576. Its totient is φ = 13343116800.

The previous prime is 55464003533. The next prime is 55464003541. The reversal of 55464003540 is 4530046455.

55464003540 is a `hidden beast` number, since 5 + 5 + 4 + 640 + 0 + 3 + 5 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55464003495 and 55464003504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55464003541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 152464 + ... + 366296.

It is an arithmetic number, because the mean of its divisors is an integer number (1284287004).

Almost surely, 2^55464003540 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 55464003540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92468664288).

55464003540 is an abundant number, since it is smaller than the sum of its proper divisors (129473325036).

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

55464003540 is a wasteful number, since it uses less digits than its factorization.

55464003540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213990 (or 213985 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 55464003540 its reverse (4530046455), we get a palindrome (59994049995).

The spelling of 55464003540 in words is "fifty-five billion, four hundred sixty-four million, three thousand, five hundred forty".