55103636 has 24 divisors (see below), whose sum is σ = 112459200. Its totient is φ = 23615256.

The previous prime is 55103621. The next prime is 55103641. The reversal of 55103636 is 63630155.

It is a junction number, because it is equal to n+sod(n) for n = 55103599 and 55103608.

It is a congruent number.

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, 18710 + ... + 21453.

It is an arithmetic number, because the mean of its divisors is an integer number (4685800).

Almost surely, 2^55103636 is an apocalyptic number.

It is an amenable number.

55103636 is an abundant number, since it is smaller than the sum of its proper divisors (57355564).

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

55103636 is a wasteful number, since it uses less digits than its factorization.

55103636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40188 (or 40172 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 55103636 is about 7423.1823364377. The cubic root of 55103636 is about 380.5339584960.

The spelling of 55103636 in words is "fifty-five million, one hundred three thousand, six hundred thirty-six".