55783354225 has 9 divisors (see below), whose sum is σ = 69172823617. Its totient is φ = 44625738640.

The previous prime is 55783354223. The next prime is 55783354261. The reversal of 55783354225 is 52245338755.

The square root of 55783354225 is 236185.

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

It can be written as a sum of positive squares in 4 ways, for example, as 30357138289 + 25426215936 = 174233^2 + 159456^2 .

It is not a de Polignac number, because 55783354225 - 2¹ = 55783354223 is a prime.

It is a super-2 number, since 2×55783354225² (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 (55783354223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1157307 + ... + 1204543.

Almost surely, 2^55783354225 is an apocalyptic number.

55783354225 is the 236185-th square number.

55783354225 is the 118093-rd centered octagonal number.

It is an amenable number.

55783354225 is a deficient number, since it is larger than the sum of its proper divisors (13389469392).

55783354225 is an frugal number, since it uses more digits than its factorization.

55783354225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94484 (or 47242 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 49.

Multiplying 55783354225 by its sum of digits (49), we get a square (2733384357025 = 1653295²).

The spelling of 55783354225 in words is "fifty-five billion, seven hundred eighty-three million, three hundred fifty-four thousand, two hundred twenty-five".