54787769 has 2 divisors, whose sum is σ = 54787770. Its totient is φ = 54787768.

The previous prime is 54787763. The next prime is 54787829. The reversal of 54787769 is 96778745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46308025 + 8479744 = 6805^2 + 2912^2 .

It is a cyclic number.

It is not a de Polignac number, because 54787769 - 2¹⁶ = 54722233 is a prime.

It is a super-2 number, since 2×54787769² = 6003399263994722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54787769.

It is not a weakly prime, because it can be changed into another prime (54787763) 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, 27393884 + 27393885.

It is an arithmetic number, because the mean of its divisors is an integer number (27393885).

Almost surely, 2^54787769 is an apocalyptic number.

It is an amenable number.

54787769 is a deficient number, since it is larger than the sum of its proper divisors (1).

54787769 is an equidigital number, since it uses as much as digits as its factorization.

54787769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 53.

The square root of 54787769 is about 7401.8760459765. The cubic root of 54787769 is about 379.8054613660.

The spelling of 54787769 in words is "fifty-four million, seven hundred eighty-seven thousand, seven hundred sixty-nine".