55864197 has 6 divisors (see below), whose sum is σ = 80692742. Its totient is φ = 37242792.

The previous prime is 55864189. The next prime is 55864219. The reversal of 55864197 is 79146855.

55864197 is a `hidden beast` number, since 558 + 6 + 4 + 1 + 97 = 666.

55864197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 43480836 + 12383361 = 6594^2 + 3519^2 .

It is not a de Polignac number, because 55864197 - 2³ = 55864189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55864177) 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 5 ways as a sum of consecutive naturals, for example, 3103558 + ... + 3103575.

Almost surely, 2^55864197 is an apocalyptic number.

It is an amenable number.

55864197 is a deficient number, since it is larger than the sum of its proper divisors (24828545).

55864197 is a wasteful number, since it uses less digits than its factorization.

55864197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6207139 (or 6207136 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 55864197 is about 7474.2355461947. The cubic root of 55864197 is about 382.2767221834.

The spelling of 55864197 in words is "fifty-five million, eight hundred sixty-four thousand, one hundred ninety-seven".