55521205432 has 64 divisors (see below), whose sum is σ = 132808262400. Its totient is φ = 21128567040.

The previous prime is 55521205427. The next prime is 55521205457. The reversal of 55521205432 is 23450212555.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021557 + ... + 1074532.

It is an arithmetic number, because the mean of its divisors is an integer number (2075129100).

Almost surely, 2^55521205432 is an apocalyptic number.

It is an amenable number.

55521205432 is an abundant number, since it is smaller than the sum of its proper divisors (77287056968).

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

55521205432 is a wasteful number, since it uses less digits than its factorization.

55521205432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096156 (or 2096152 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 55521205432 its reverse (23450212555), we get a palindrome (78971417987).

The spelling of 55521205432 in words is "fifty-five billion, five hundred twenty-one million, two hundred five thousand, four hundred thirty-two".