550494403 has 2 divisors, whose sum is σ = 550494404. Its totient is φ = 550494402.

The previous prime is 550494401. The next prime is 550494407. The reversal of 550494403 is 304494055.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550494403 - 2¹ = 550494401 is a prime.

Together with 550494401, it forms a pair of twin primes.

It is equal to p_28870018 and since 550494403 and 28870018 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (550494401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275247201 + 275247202.

It is an arithmetic number, because the mean of its divisors is an integer number (275247202).

Almost surely, 2^550494403 is an apocalyptic number.

550494403 is a deficient number, since it is larger than the sum of its proper divisors (1).

550494403 is an equidigital number, since it uses as much as digits as its factorization.

550494403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 550494403 is about 23462.6171387593. The cubic root of 550494403 is about 819.5666970121.

The spelling of 550494403 in words is "five hundred fifty million, four hundred ninety-four thousand, four hundred three".