55133204 has 24 divisors (see below), whose sum is σ = 111823488. Its totient is φ = 23294880.

The previous prime is 55133201. The next prime is 55133251. The reversal of 55133204 is 40233155.

It is a self number, because there is not a number n which added to its sum of digits gives 55133204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55133201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11879 + ... + 15854.

It is an arithmetic number, because the mean of its divisors is an integer number (4659312).

Almost surely, 2^55133204 is an apocalyptic number.

It is an amenable number.

55133204 is an abundant number, since it is smaller than the sum of its proper divisors (56690284).

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

55133204 is a wasteful number, since it uses less digits than its factorization.

55133204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27815 (or 27813 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 55133204 is about 7425.1736680027. The cubic root of 55133204 is about 380.6020097596.

Adding to 55133204 its reverse (40233155), we get a palindrome (95366359).

The spelling of 55133204 in words is "fifty-five million, one hundred thirty-three thousand, two hundred four".