53944757533 has 2 divisors, whose sum is σ = 53944757534. Its totient is φ = 53944757532.

The previous prime is 53944757521. The next prime is 53944757557. The reversal of 53944757533 is 33575744935.

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., 50633100324 + 3311657209 = 225018^2 + 57547^2 .

It is a cyclic number.

It is not a de Polignac number, because 53944757533 - 2⁵ = 53944757501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53944757563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26972378766 + 26972378767.

It is an arithmetic number, because the mean of its divisors is an integer number (26972378767).

Almost surely, 2^53944757533 is an apocalyptic number.

It is an amenable number.

53944757533 is a deficient number, since it is larger than the sum of its proper divisors (1).

53944757533 is an equidigital number, since it uses as much as digits as its factorization.

53944757533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814000, while the sum is 55.

The spelling of 53944757533 in words is "fifty-three billion, nine hundred forty-four million, seven hundred fifty-seven thousand, five hundred thirty-three".