55872097 has 4 divisors (see below), whose sum is σ = 56448196. Its totient is φ = 55296000.

The previous prime is 55872079. The next prime is 55872121. The reversal of 55872097 is 79027855.

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 22127616 + 33744481 = 4704^2 + 5809^2 .

It is a cyclic number.

It is not a de Polignac number, because 55872097 - 2¹¹ = 55870049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55872077) 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, 287904 + ... + 288097.

It is an arithmetic number, because the mean of its divisors is an integer number (14112049).

Almost surely, 2^55872097 is an apocalyptic number.

It is an amenable number.

55872097 is a deficient number, since it is larger than the sum of its proper divisors (576099).

55872097 is an equidigital number, since it uses as much as digits as its factorization.

55872097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576098.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 55872097 is about 7474.7640096527. The cubic root of 55872097 is about 382.2947411408.

The spelling of 55872097 in words is "fifty-five million, eight hundred seventy-two thousand, ninety-seven".