55521205424 has 40 divisors (see below), whose sum is σ = 107994754560. Its totient is φ = 27651716928.

The previous prime is 55521205423. The next prime is 55521205427. The reversal of 55521205424 is 42450212555.

55521205424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55521205423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10130717 + ... + 10136195.

It is an arithmetic number, because the mean of its divisors is an integer number (2699868864).

Almost surely, 2^55521205424 is an apocalyptic number.

It is an amenable number.

55521205424 is a deficient number, since it is larger than the sum of its proper divisors (52473549136).

55521205424 is a wasteful number, since it uses less digits than its factorization.

55521205424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857 (or 7851 counting only the distinct ones).

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

Adding to 55521205424 its reverse (42450212555), we get a palindrome (97971417979).

The spelling of 55521205424 in words is "fifty-five billion, five hundred twenty-one million, two hundred five thousand, four hundred twenty-four".