55520204 has 24 divisors (see below), whose sum is σ = 102816000. Its totient is φ = 26159760.

The previous prime is 55520189. The next prime is 55520233. The reversal of 55520204 is 40202555.

It is a self number, because there is not a number n which added to its sum of digits gives 55520204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13289 + ... + 16959.

It is an arithmetic number, because the mean of its divisors is an integer number (4284000).

Almost surely, 2^55520204 is an apocalyptic number.

It is an amenable number.

55520204 is a deficient number, since it is larger than the sum of its proper divisors (47295796).

55520204 is a wasteful number, since it uses less digits than its factorization.

55520204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893 (or 3891 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 55520204 is about 7451.1880931835. The cubic root of 55520204 is about 381.4904621531.

Adding to 55520204 its reverse (40202555), we get a palindrome (95722759).

The spelling of 55520204 in words is "fifty-five million, five hundred twenty thousand, two hundred four".