552991399 has 2 divisors, whose sum is σ = 552991400. Its totient is φ = 552991398.

The previous prime is 552991393. The next prime is 552991433. The reversal of 552991399 is 993199255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 552991399 - 2³ = 552991391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (552991391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276495699 + 276495700.

It is an arithmetic number, because the mean of its divisors is an integer number (276495700).

Almost surely, 2^552991399 is an apocalyptic number.

552991399 is a deficient number, since it is larger than the sum of its proper divisors (1).

552991399 is an equidigital number, since it uses as much as digits as its factorization.

552991399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 984150, while the sum is 52.

The square root of 552991399 is about 23515.7691560366. The cubic root of 552991399 is about 820.8039898558.

The spelling of 552991399 in words is "five hundred fifty-two million, nine hundred ninety-one thousand, three hundred ninety-nine".