655397453 has 2 divisors, whose sum is σ = 655397454. Its totient is φ = 655397452.

The previous prime is 655397333. The next prime is 655397459. The reversal of 655397453 is 354793556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643028164 + 12369289 = 25358^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 655397453 - 2¹⁸ = 655135309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 655397398 and 655397407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655397459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327698726 + 327698727.

It is an arithmetic number, because the mean of its divisors is an integer number (327698727).

Almost surely, 2^655397453 is an apocalyptic number.

It is an amenable number.

655397453 is a deficient number, since it is larger than the sum of its proper divisors (1).

655397453 is an equidigital number, since it uses as much as digits as its factorization.

655397453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701000, while the sum is 47.

The square root of 655397453 is about 25600.7314934554. The cubic root of 655397453 is about 868.6301837209.

The spelling of 655397453 in words is "six hundred fifty-five million, three hundred ninety-seven thousand, four hundred fifty-three".