550415399 has 2 divisors, whose sum is σ = 550415400. Its totient is φ = 550415398.

The previous prime is 550415381. The next prime is 550415471. The reversal of 550415399 is 993514055.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550415399 is a prime.

It is a super-2 number, since 2×550415399² = 605914222912658402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550415309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275207699 + 275207700.

It is an arithmetic number, because the mean of its divisors is an integer number (275207700).

Almost surely, 2^550415399 is an apocalyptic number.

550415399 is a deficient number, since it is larger than the sum of its proper divisors (1).

550415399 is an equidigital number, since it uses as much as digits as its factorization.

550415399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 550415399 is about 23460.9334639524. The cubic root of 550415399 is about 819.5274885328.

The spelling of 550415399 in words is "five hundred fifty million, four hundred fifteen thousand, three hundred ninety-nine".