55500021202 has 4 divisors (see below), whose sum is σ = 83250031806. Its totient is φ = 27750010600.

The previous prime is 55500021133. The next prime is 55500021229. The reversal of 55500021202 is 20212000555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40131708241 + 15368312961 = 200329^2 + 123969^2 .

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 as a sum of consecutive naturals, namely, 13875005299 + ... + 13875005302.

Almost surely, 2^55500021202 is an apocalyptic number.

55500021202 is a deficient number, since it is larger than the sum of its proper divisors (27750010604).

55500021202 is a wasteful number, since it uses less digits than its factorization.

55500021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27750010603.

The product of its (nonzero) digits is 1000, while the sum is 22.

Adding to 55500021202 its reverse (20212000555), we get a palindrome (75712021757).

The spelling of 55500021202 in words is "fifty-five billion, five hundred million, twenty-one thousand, two hundred two".