355206149 has 4 divisors (see below), whose sum is σ = 355305036. Its totient is φ = 355107264.

The previous prime is 355206139. The next prime is 355206151. The reversal of 355206149 is 941602553.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941602553 = 4273 ⋅220361.

It can be written as a sum of positive squares in 2 ways, for example, as 295221124 + 59985025 = 17182^2 + 7745^2 .

It is a cyclic number.

It is not a de Polignac number, because 355206149 - 2¹⁶ = 355140613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355206139) 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, 43844 + ... + 51309.

It is an arithmetic number, because the mean of its divisors is an integer number (88826259).

Almost surely, 2^355206149 is an apocalyptic number.

It is an amenable number.

355206149 is a deficient number, since it is larger than the sum of its proper divisors (98887).

355206149 is an equidigital number, since it uses as much as digits as its factorization.

355206149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98886.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 355206149 is about 18846.9135138887. The cubic root of 355206149 is about 708.2069076448.

The spelling of 355206149 in words is "three hundred fifty-five million, two hundred six thousand, one hundred forty-nine".