551780093 has 2 divisors, whose sum is σ = 551780094. Its totient is φ = 551780092.

The previous prime is 551780081. The next prime is 551780137. The reversal of 551780093 is 390087155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551404324 + 375769 = 23482^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 551780093 - 2⁶ = 551780029 is a prime.

It is a super-3 number, since 3×551780093³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551780293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275890046 + 275890047.

It is an arithmetic number, because the mean of its divisors is an integer number (275890047).

Almost surely, 2^551780093 is an apocalyptic number.

It is an amenable number.

551780093 is a deficient number, since it is larger than the sum of its proper divisors (1).

551780093 is an equidigital number, since it uses as much as digits as its factorization.

551780093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 551780093 is about 23489.9998510004. Note that the first 3 decimals coincide. The cubic root of 551780093 is about 820.2042387351.

The spelling of 551780093 in words is "five hundred fifty-one million, seven hundred eighty thousand, ninety-three".