553938397 has 2 divisors, whose sum is σ = 553938398. Its totient is φ = 553938396.

The previous prime is 553938361. The next prime is 553938401. The reversal of 553938397 is 793839355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 537729721 + 16208676 = 23189^2 + 4026^2 .

It is a cyclic number.

It is not a de Polignac number, because 553938397 - 2⁷ = 553938269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553938097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276969198 + 276969199.

It is an arithmetic number, because the mean of its divisors is an integer number (276969199).

Almost surely, 2^553938397 is an apocalyptic number.

It is an amenable number.

553938397 is a deficient number, since it is larger than the sum of its proper divisors (1).

553938397 is an equidigital number, since it uses as much as digits as its factorization.

553938397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3061800, while the sum is 52.

The square root of 553938397 is about 23535.8959251608. The cubic root of 553938397 is about 821.2722650412.

The spelling of 553938397 in words is "five hundred fifty-three million, nine hundred thirty-eight thousand, three hundred ninety-seven".