55200092809 has 3 divisors (see below), whose sum is σ = 55200327757. Its totient is φ = 55199857862.

The previous prime is 55200092803. The next prime is 55200092819. The reversal of 55200092809 is 90829000255.

The square root of 55200092809 is 234947.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 55200092809 - 2¹¹ = 55200090761 is a prime.

It is a super-2 number, since 2×55200092809² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55200092803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 117474 + ... + 352420.

Almost surely, 2^55200092809 is an apocalyptic number.

55200092809 is the 234947-th square number.

55200092809 is the 117474-th centered octagonal number.

It is an amenable number.

55200092809 is a deficient number, since it is larger than the sum of its proper divisors (234948).

55200092809 is an frugal number, since it uses more digits than its factorization.

55200092809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469894 (or 234947 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

It can be divided in two parts, 552000 and 92809, that added together give a square (644809 = 803²).

The spelling of 55200092809 in words is "fifty-five billion, two hundred million, ninety-two thousand, eight hundred nine".