553978409 has 2 divisors, whose sum is σ = 553978410. Its totient is φ = 553978408.

The previous prime is 553978363. The next prime is 553978457. The reversal of 553978409 is 904879355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 527712784 + 26265625 = 22972^2 + 5125^2 .

It is a cyclic number.

It is not a de Polignac number, because 553978409 - 2¹² = 553974313 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (553978109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276989204 + 276989205.

It is an arithmetic number, because the mean of its divisors is an integer number (276989205).

Almost surely, 2^553978409 is an apocalyptic number.

It is an amenable number.

553978409 is a deficient number, since it is larger than the sum of its proper divisors (1).

553978409 is an equidigital number, since it uses as much as digits as its factorization.

553978409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 553978409 is about 23536.7459305657. The cubic root of 553978409 is about 821.2920385725.

The spelling of 553978409 in words is "five hundred fifty-three million, nine hundred seventy-eight thousand, four hundred nine".