55204331 has 24 divisors (see below), whose sum is σ = 70096320. Its totient is φ = 43085952.

The previous prime is 55204283. The next prime is 55204339. The reversal of 55204331 is 13340255.

It is not a de Polignac number, because 55204331 - 2¹⁰ = 55203307 is a prime.

It is a super-2 number, since 2×55204331² = 6095036322315122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55204297 and 55204306.

It is not an unprimeable number, because it can be changed into a prime (55204339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49775 + ... + 50871.

It is an arithmetic number, because the mean of its divisors is an integer number (2920680).

Almost surely, 2^55204331 is an apocalyptic number.

55204331 is a deficient number, since it is larger than the sum of its proper divisors (14891989).

55204331 is a wasteful number, since it uses less digits than its factorization.

55204331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203 (or 1196 counting only the distinct ones).

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

The square root of 55204331 is about 7429.9617091880. The cubic root of 55204331 is about 380.7656101801.

Adding to 55204331 its reverse (13340255), we get a palindrome (68544586).

The spelling of 55204331 in words is "fifty-five million, two hundred four thousand, three hundred thirty-one".