53554309 has 2 divisors, whose sum is σ = 53554310. Its totient is φ = 53554308.

The previous prime is 53554289. The next prime is 53554313. The reversal of 53554309 is 90345535.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51523684 + 2030625 = 7178^2 + 1425^2 .

It is a cyclic number.

It is not a de Polignac number, because 53554309 - 2⁷ = 53554181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53554409) 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, 26777154 + 26777155.

It is an arithmetic number, because the mean of its divisors is an integer number (26777155).

Almost surely, 2^53554309 is an apocalyptic number.

It is an amenable number.

53554309 is a deficient number, since it is larger than the sum of its proper divisors (1).

53554309 is an equidigital number, since it uses as much as digits as its factorization.

53554309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 53554309 is about 7318.0809642966. The cubic root of 53554309 is about 376.9335603754.

The spelling of 53554309 in words is "fifty-three million, five hundred fifty-four thousand, three hundred nine".