55512132021 has 24 divisors (see below), whose sum is σ = 87314916000. Its totient is φ = 33851315232.

The previous prime is 55512132019. The next prime is 55512132029. The reversal of 55512132021 is 12023121555.

It is not a de Polignac number, because 55512132021 - 2¹ = 55512132019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55512132029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5592151 + ... + 5602068.

It is an arithmetic number, because the mean of its divisors is an integer number (3638121500).

Almost surely, 2^55512132021 is an apocalyptic number.

It is an amenable number.

55512132021 is a deficient number, since it is larger than the sum of its proper divisors (31802783979).

55512132021 is a wasteful number, since it uses less digits than its factorization.

55512132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11194273 (or 11194270 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 55512132021 its reverse (12023121555), we get a palindrome (67535253576).

The spelling of 55512132021 in words is "fifty-five billion, five hundred twelve million, one hundred thirty-two thousand, twenty-one".