55204632 has 128 divisors (see below), whose sum is σ = 181440000. Its totient is φ = 15216768.

The previous prime is 55204631. The next prime is 55204637. The reversal of 55204632 is 23640255.

55204632 is a `hidden beast` number, since 5 + 5 + 20 + 4 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 55204596 and 55204605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55204631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43219 + ... + 44477.

It is an arithmetic number, because the mean of its divisors is an integer number (1417500).

Almost surely, 2^55204632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55204632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90720000).

55204632 is an abundant number, since it is smaller than the sum of its proper divisors (126235368).

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

55204632 is a wasteful number, since it uses less digits than its factorization.

55204632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 55204632 is about 7429.9819649848. The cubic root of 55204632 is about 380.7663022167.

Adding to 55204632 its reverse (23640255), we get a palindrome (78844887).

The spelling of 55204632 in words is "fifty-five million, two hundred four thousand, six hundred thirty-two".