55605198 has 32 divisors (see below), whose sum is σ = 128459520. Its totient is φ = 15858560.

The previous prime is 55605197. The next prime is 55605203. The reversal of 55605198 is 89150655.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55605197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23658 + ... + 25901.

It is an arithmetic number, because the mean of its divisors is an integer number (4014360).

Almost surely, 2^55605198 is an apocalyptic number.

55605198 is an abundant number, since it is smaller than the sum of its proper divisors (72854322).

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

55605198 is a wasteful number, since it uses less digits than its factorization.

55605198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49592.

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 55605198 is about 7456.8892978239. The cubic root of 55605198 is about 381.6850331756.

The spelling of 55605198 in words is "fifty-five million, six hundred five thousand, one hundred ninety-eight".