55221342502 has 16 divisors (see below), whose sum is σ = 83306759472. Its totient is φ = 27452744320.

The previous prime is 55221342497. The next prime is 55221342521. The reversal of 55221342502 is 20524312255.

It is a super-3 number, since 3×55221342502³ (a number of 33 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 265578 + ... + 425410.

It is an arithmetic number, because the mean of its divisors is an integer number (5206672467).

Almost surely, 2^55221342502 is an apocalyptic number.

55221342502 is a deficient number, since it is larger than the sum of its proper divisors (28085416970).

55221342502 is a wasteful number, since it uses less digits than its factorization.

55221342502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160823.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 55221342502 its reverse (20524312255), we get a palindrome (75745654757).

The spelling of 55221342502 in words is "fifty-five billion, two hundred twenty-one million, three hundred forty-two thousand, five hundred two".