54857969 has 2 divisors, whose sum is σ = 54857970. Its totient is φ = 54857968.

The previous prime is 54857923. The next prime is 54857989. The reversal of 54857969 is 96975845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54760000 + 97969 = 7400^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 54857969 - 2¹⁶ = 54792433 is a prime.

It is a super-2 number, since 2×54857969² = 6018793525609922, 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 54857969.

It is not a weakly prime, because it can be changed into another prime (54857989) 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, 27428984 + 27428985.

It is an arithmetic number, because the mean of its divisors is an integer number (27428985).

Almost surely, 2^54857969 is an apocalyptic number.

It is an amenable number.

54857969 is a deficient number, since it is larger than the sum of its proper divisors (1).

54857969 is an equidigital number, since it uses as much as digits as its factorization.

54857969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 53.

The square root of 54857969 is about 7406.6165689875. The cubic root of 54857969 is about 379.9676080422.

The spelling of 54857969 in words is "fifty-four million, eight hundred fifty-seven thousand, nine hundred sixty-nine".