55521254240 has 96 divisors (see below), whose sum is σ = 131881932000. Its totient is φ = 22088163328.

The previous prime is 55521254233. The next prime is 55521254249. The reversal of 55521254240 is 4245212555.

55521254240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55521254240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55521254249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26077496 + ... + 26079624.

It is an arithmetic number, because the mean of its divisors is an integer number (1373770125).

Almost surely, 2^55521254240 is an apocalyptic number.

It is an amenable number.

55521254240 is an abundant number, since it is smaller than the sum of its proper divisors (76360677760).

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

55521254240 is a wasteful number, since it uses less digits than its factorization.

55521254240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952 (or 2944 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 55521254240 its reverse (4245212555), we get a palindrome (59766466795).

The spelling of 55521254240 in words is "fifty-five billion, five hundred twenty-one million, two hundred fifty-four thousand, two hundred forty".