55279225 has 9 divisors (see below), whose sum is σ = 68592367. Its totient is φ = 44193640.

The previous prime is 55279201. The next prime is 55279271. The reversal of 55279225 is 52297255.

The square root of 55279225 is 7435.

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

It can be written as a sum of positive squares in only one way, i.e., 19900521 + 35378704 = 4461^2 + 5948^2 .

It is not a de Polignac number, because 55279225 - 2¹⁹ = 54754937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 36432 + ... + 37918.

Almost surely, 2^55279225 is an apocalyptic number.

55279225 is the 7435-th square number.

55279225 is the 3718-th centered octagonal number.

It is an amenable number.

55279225 is a deficient number, since it is larger than the sum of its proper divisors (13313142).

55279225 is an frugal number, since it uses more digits than its factorization.

55279225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2984 (or 1492 counting only the distinct ones).

The product of its digits is 63000, while the sum is 37.

The cubic root of 55279225 is about 380.9377233262.

The spelling of 55279225 in words is "fifty-five million, two hundred seventy-nine thousand, two hundred twenty-five".