55225669 has 2 divisors, whose sum is σ = 55225670. Its totient is φ = 55225668.

The previous prime is 55225649. The next prime is 55225697. The reversal of 55225669 is 96652255.

It is a happy number.

55225669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28836900 + 26388769 = 5370^2 + 5137^2 .

It is a cyclic number.

It is not a de Polignac number, because 55225669 - 2⁵ = 55225637 is a prime.

It is a super-2 number, since 2×55225669² = 6099749032995122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55225619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27612834 + 27612835.

It is an arithmetic number, because the mean of its divisors is an integer number (27612835).

Almost surely, 2^55225669 is an apocalyptic number.

It is an amenable number.

55225669 is a deficient number, since it is larger than the sum of its proper divisors (1).

55225669 is an equidigital number, since it uses as much as digits as its factorization.

55225669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 40.

The square root of 55225669 is about 7431.3975132542. The cubic root of 55225669 is about 380.8146626720.

The spelling of 55225669 in words is "fifty-five million, two hundred twenty-five thousand, six hundred sixty-nine".