55120469 has 2 divisors, whose sum is σ = 55120470. Its totient is φ = 55120468.

The previous prime is 55120451. The next prime is 55120531. The reversal of 55120469 is 96402155.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 508369 = 7390^2 + 713^2 .

It is a cyclic number.

It is not a de Polignac number, because 55120469 - 2¹⁶ = 55054933 is a prime.

It is a super-2 number, since 2×55120469² = 6076532205559922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55120669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27560234 + 27560235.

It is an arithmetic number, because the mean of its divisors is an integer number (27560235).

Almost surely, 2^55120469 is an apocalyptic number.

It is an amenable number.

55120469 is a deficient number, since it is larger than the sum of its proper divisors (1).

55120469 is an equidigital number, since it uses as much as digits as its factorization.

55120469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 55120469 is about 7424.3160627764. The cubic root of 55120469 is about 380.5727029204.

The spelling of 55120469 in words is "fifty-five million, one hundred twenty thousand, four hundred sixty-nine".