55521424312 has 32 divisors (see below), whose sum is σ = 111256539120. Its totient is φ = 25883537920.

The previous prime is 55521424243. The next prime is 55521424339. The reversal of 55521424312 is 21342412555.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893139 + ... + 1922242.

Almost surely, 2^55521424312 is an apocalyptic number.

It is an amenable number.

55521424312 is an abundant number, since it is smaller than the sum of its proper divisors (55735114808).

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

55521424312 is a wasteful number, since it uses less digits than its factorization.

55521424312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815511 (or 3815507 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

Adding to 55521424312 its reverse (21342412555), we get a palindrome (76863836867).

The spelling of 55521424312 in words is "fifty-five billion, five hundred twenty-one million, four hundred twenty-four thousand, three hundred twelve".