53940991453 has 2 divisors, whose sum is σ = 53940991454. Its totient is φ = 53940991452.

The previous prime is 53940991439. The next prime is 53940991513. The reversal of 53940991453 is 35419904935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43279809444 + 10661182009 = 208038^2 + 103253^2 .

It is a cyclic number.

It is not a de Polignac number, because 53940991453 - 2⁹ = 53940990941 is a prime.

It is a super-4 number, since 4×53940991453⁴ (a number of 44 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53940991453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53940991553) 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, 26970495726 + 26970495727.

It is an arithmetic number, because the mean of its divisors is an integer number (26970495727).

Almost surely, 2^53940991453 is an apocalyptic number.

It is an amenable number.

53940991453 is a deficient number, since it is larger than the sum of its proper divisors (1).

53940991453 is an equidigital number, since it uses as much as digits as its factorization.

53940991453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2624400, while the sum is 52.

The spelling of 53940991453 in words is "fifty-three billion, nine hundred forty million, nine hundred ninety-one thousand, four hundred fifty-three".