55192897 has 4 divisors (see below), whose sum is σ = 58439556. Its totient is φ = 51946240.

The previous prime is 55192889. The next prime is 55192901. The reversal of 55192897 is 79829155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49547521 + 5645376 = 7039^2 + 2376^2 .

It is a cyclic number.

It is not a de Polignac number, because 55192897 - 2³ = 55192889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55192817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623304 + ... + 1623337.

It is an arithmetic number, because the mean of its divisors is an integer number (14609889).

Almost surely, 2^55192897 is an apocalyptic number.

It is an amenable number.

55192897 is a deficient number, since it is larger than the sum of its proper divisors (3246659).

55192897 is a wasteful number, since it uses less digits than its factorization.

55192897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246658.

The product of its digits is 226800, while the sum is 46.

The square root of 55192897 is about 7429.1922171929. The cubic root of 55192897 is about 380.7393201257.

The spelling of 55192897 in words is "fifty-five million, one hundred ninety-two thousand, eight hundred ninety-seven".