54403057309 has 2 divisors, whose sum is σ = 54403057310. Its totient is φ = 54403057308.

The previous prime is 54403057301. The next prime is 54403057439. The reversal of 54403057309 is 90375030445.

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., 52256588409 + 2146468900 = 228597^2 + 46330^2 .

It is a cyclic number.

It is not a de Polignac number, because 54403057309 - 2³ = 54403057301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54403057301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27201528654 + 27201528655.

It is an arithmetic number, because the mean of its divisors is an integer number (27201528655).

Almost surely, 2^54403057309 is an apocalyptic number.

It is an amenable number.

54403057309 is a deficient number, since it is larger than the sum of its proper divisors (1).

54403057309 is an equidigital number, since it uses as much as digits as its factorization.

54403057309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 54403057309 in words is "fifty-four billion, four hundred three million, fifty-seven thousand, three hundred nine".