55603100 has 36 divisors (see below), whose sum is σ = 137897424. Its totient is φ = 19063680.

The previous prime is 55603091. The next prime is 55603117. The reversal of 55603100 is 130655.

It is a super-3 number, since 3×55603100³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39017 + ... + 40416.

It is an arithmetic number, because the mean of its divisors is an integer number (3830484).

Almost surely, 2^55603100 is an apocalyptic number.

55603100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55603100 is an abundant number, since it is smaller than the sum of its proper divisors (82294324).

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

55603100 is a wasteful number, since it uses less digits than its factorization.

55603100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79454 (or 79447 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 55603100 is about 7456.7486212155. The cubic root of 55603100 is about 381.6802327535.

Adding to 55603100 its reverse (130655), we get a palindrome (55733755).

The spelling of 55603100 in words is "fifty-five million, six hundred three thousand, one hundred".