550318403 has 2 divisors, whose sum is σ = 550318404. Its totient is φ = 550318402.

The previous prime is 550318361. The next prime is 550318409. The reversal of 550318403 is 304813055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550318403 - 2²⁸ = 281882947 is a prime.

It is not a weakly prime, because it can be changed into another prime (550318409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275159201 + 275159202.

It is an arithmetic number, because the mean of its divisors is an integer number (275159202).

Almost surely, 2^550318403 is an apocalyptic number.

550318403 is a deficient number, since it is larger than the sum of its proper divisors (1).

550318403 is an equidigital number, since it uses as much as digits as its factorization.

550318403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 550318403 is about 23458.8661916982. The cubic root of 550318403 is about 819.4793457675.

The spelling of 550318403 in words is "five hundred fifty million, three hundred eighteen thousand, four hundred three".