55558197 has 8 divisors (see below), whose sum is σ = 82308480. Its totient is φ = 37038780.

The previous prime is 55558163. The next prime is 55558211. The reversal of 55558197 is 79185555.

55558197 is a `hidden beast` number, since 5 + 5 + 558 + 1 + 97 = 666.

55558197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55558197 - 2¹⁴ = 55541813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55558297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028829 + ... + 1028882.

It is an arithmetic number, because the mean of its divisors is an integer number (10288560).

Almost surely, 2^55558197 is an apocalyptic number.

It is an amenable number.

55558197 is a deficient number, since it is larger than the sum of its proper divisors (26750283).

55558197 is a wasteful number, since it uses less digits than its factorization.

55558197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057720 (or 2057714 counting only the distinct ones).

The product of its digits is 315000, while the sum is 45.

The square root of 55558197 is about 7453.7371163732. The cubic root of 55558197 is about 381.5774614868.

It can be divided in two parts, 55558 and 197, that added together give a palindrome (55755).

The spelling of 55558197 in words is "fifty-five million, five hundred fifty-eight thousand, one hundred ninety-seven".