55520200 has 24 divisors (see below), whose sum is σ = 129084930. Its totient is φ = 22208000.

The previous prime is 55520189. The next prime is 55520233. The reversal of 55520200 is 202555.

It can be written as a sum of positive squares in 3 ways, for example, as 52215076 + 3305124 = 7226^2 + 1818^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138601 + ... + 139000.

Almost surely, 2^55520200 is an apocalyptic number.

55520200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55520200 is an abundant number, since it is smaller than the sum of its proper divisors (73564730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55520200 is a wasteful number, since it uses less digits than its factorization.

55520200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277617 (or 277608 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 55520200 is about 7451.1878247700. The cubic root of 55520200 is about 381.4904529915.

Adding to 55520200 its reverse (202555), we get a palindrome (55722755).

The spelling of 55520200 in words is "fifty-five million, five hundred twenty thousand, two hundred".