55028669 has 2 divisors, whose sum is σ = 55028670. Its totient is φ = 55028668.

The previous prime is 55028663. The next prime is 55028713. The reversal of 55028669 is 96682055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45024100 + 10004569 = 6710^2 + 3163^2 .

It is a cyclic number.

It is not a de Polignac number, because 55028669 - 2¹⁶ = 54963133 is a prime.

It is a super-2 number, since 2×55028669² = 6056308823823122, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55028663) 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 as a sum of consecutive naturals, namely, 27514334 + 27514335.

It is an arithmetic number, because the mean of its divisors is an integer number (27514335).

Almost surely, 2^55028669 is an apocalyptic number.

It is an amenable number.

55028669 is a deficient number, since it is larger than the sum of its proper divisors (1).

55028669 is an equidigital number, since it uses as much as digits as its factorization.

55028669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 55028669 is about 7418.1310988685. The cubic root of 55028669 is about 380.3613114737.

The spelling of 55028669 in words is "fifty-five million, twenty-eight thousand, six hundred sixty-nine".