55726225 has 9 divisors (see below), whose sum is σ = 69146833. Its totient is φ = 44551120.

The previous prime is 55726219. The next prime is 55726247. The reversal of 55726225 is 52262755.

The square root of 55726225 is 7465.

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 4231249 + 51494976 = 2057^2 + 7176^2 .

It is not a de Polignac number, because 55726225 - 2⁹ = 55725713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 36579 + ... + 38071.

Almost surely, 2^55726225 is an apocalyptic number.

55726225 is the 7465-th square number.

55726225 is the 3733-rd centered octagonal number.

It is an amenable number.

55726225 is a deficient number, since it is larger than the sum of its proper divisors (13420608).

55726225 is an frugal number, since it uses more digits than its factorization.

55726225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996 (or 1498 counting only the distinct ones).

The product of its digits is 42000, while the sum is 34.

The cubic root of 55726225 is about 381.9617502339.

The spelling of 55726225 in words is "fifty-five million, seven hundred twenty-six thousand, two hundred twenty-five".