55553211312 has 20 divisors (see below), whose sum is σ = 143512462680. Its totient is φ = 18517737088.

The previous prime is 55553211283. The next prime is 55553211323. The reversal of 55553211312 is 21311235555.

It is a happy number.

It is a super-2 number, since 2×55553211312² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578679237 + ... + 578679332.

It is an arithmetic number, because the mean of its divisors is an integer number (7175623134).

Almost surely, 2^55553211312 is an apocalyptic number.

It is an amenable number.

55553211312 is an abundant number, since it is smaller than the sum of its proper divisors (87959251368).

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

55553211312 is a wasteful number, since it uses less digits than its factorization.

55553211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157358580 (or 1157358574 counting only the distinct ones).

The product of its digits is 22500, while the sum is 33.

Adding to 55553211312 its reverse (21311235555), we get a palindrome (76864446867).

The spelling of 55553211312 in words is "fifty-five billion, five hundred fifty-three million, two hundred eleven thousand, three hundred twelve".