53397557453 has 2 divisors, whose sum is σ = 53397557454. Its totient is φ = 53397557452.

The previous prime is 53397557449. The next prime is 53397557461. The reversal of 53397557453 is 35475579335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47122858084 + 6274699369 = 217078^2 + 79213^2 .

It is a cyclic number.

It is not a de Polignac number, because 53397557453 - 2² = 53397557449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53397557053) 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, 26698778726 + 26698778727.

It is an arithmetic number, because the mean of its divisors is an integer number (26698778727).

Almost surely, 2^53397557453 is an apocalyptic number.

It is an amenable number.

53397557453 is a deficient number, since it is larger than the sum of its proper divisors (1).

53397557453 is an equidigital number, since it uses as much as digits as its factorization.

53397557453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29767500, while the sum is 56.

The spelling of 53397557453 in words is "fifty-three billion, three hundred ninety-seven million, five hundred fifty-seven thousand, four hundred fifty-three".