550133993 has 2 divisors, whose sum is σ = 550133994. Its totient is φ = 550133992.

The previous prime is 550133989. The next prime is 550134041. The reversal of 550133993 is 399331055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549058624 + 1075369 = 23432^2 + 1037^2 .

It is a cyclic number.

It is not a de Polignac number, because 550133993 - 2² = 550133989 is a prime.

It is equal to p_28852085 and since 550133993 and 28852085 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 (550133963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275066996 + 275066997.

It is an arithmetic number, because the mean of its divisors is an integer number (275066997).

Almost surely, 2^550133993 is an apocalyptic number.

It is an amenable number.

550133993 is a deficient number, since it is larger than the sum of its proper divisors (1).

550133993 is an equidigital number, since it uses as much as digits as its factorization.

550133993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54675, while the sum is 38.

The square root of 550133993 is about 23454.9353655046. The cubic root of 550133993 is about 819.3878005406.

The spelling of 550133993 in words is "five hundred fifty million, one hundred thirty-three thousand, nine hundred ninety-three".