355781093 has 4 divisors (see below), whose sum is σ = 355827948. Its totient is φ = 355734240.

The previous prime is 355781087. The next prime is 355781119. The reversal of 355781093 is 390187553.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178970884 + 176810209 = 13378^2 + 13297^2 .

It is a cyclic number.

It is not a de Polignac number, because 355781093 - 2⁸ = 355780837 is a prime.

It is a super-2 number, since 2×355781093² = 253160372272549298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 355781093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355781053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9128 + ... + 28193.

It is an arithmetic number, because the mean of its divisors is an integer number (88956987).

Almost surely, 2^355781093 is an apocalyptic number.

It is an amenable number.

355781093 is a deficient number, since it is larger than the sum of its proper divisors (46855).

355781093 is an equidigital number, since it uses as much as digits as its factorization.

355781093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46854.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 355781093 is about 18862.1603481680. The cubic root of 355781093 is about 708.5888077717.

The spelling of 355781093 in words is "three hundred fifty-five million, seven hundred eighty-one thousand, ninety-three".