55201100 has 18 divisors (see below), whose sum is σ = 119786604. Its totient is φ = 22080400.

The previous prime is 55201087. The next prime is 55201141. The reversal of 55201100 is 110255.

It is a super-2 number, since 2×55201100² = 6094322882420000, which contains 22 as substring.

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, 275906 + ... + 276105.

Almost surely, 2^55201100 is an apocalyptic number.

55201100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55201100 is an abundant number, since it is smaller than the sum of its proper divisors (64585504).

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

55201100 is a wasteful number, since it uses less digits than its factorization.

55201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552025 (or 552018 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 55201100 is about 7429.7442755454. The cubic root of 55201100 is about 380.7581815499.

Adding to 55201100 its reverse (110255), we get a palindrome (55311355).

The spelling of 55201100 in words is "fifty-five million, two hundred one thousand, one hundred".