55205220502 has 8 divisors (see below), whose sum is σ = 84370242816. Its totient is φ = 27081806232.

The previous prime is 55205220493. The next prime is 55205220547. The reversal of 55205220502 is 20502250255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55205220502² (a number of 22 digits) contains 22 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 3 ways as a sum of consecutive naturals, for example, 260401878 + ... + 260402089.

It is an arithmetic number, because the mean of its divisors is an integer number (10546280352).

Almost surely, 2^55205220502 is an apocalyptic number.

55205220502 is a deficient number, since it is larger than the sum of its proper divisors (29165022314).

55205220502 is a wasteful number, since it uses less digits than its factorization.

55205220502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520804022.

The product of its (nonzero) digits is 10000, while the sum is 28.

Adding to 55205220502 its reverse (20502250255), we get a palindrome (75707470757).

The spelling of 55205220502 in words is "fifty-five billion, two hundred five million, two hundred twenty thousand, five hundred two".