355998261 has 8 divisors (see below), whose sum is σ = 474755904. Its totient is φ = 237286400.

The previous prime is 355998259. The next prime is 355998263. The reversal of 355998261 is 162899553.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (355998259) and next prime (355998263).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 355998261 - 2¹ = 355998259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 355998261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355998263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16336 + ... + 31286.

It is an arithmetic number, because the mean of its divisors is an integer number (59344488).

Almost surely, 2^355998261 is an apocalyptic number.

It is an amenable number.

355998261 is a deficient number, since it is larger than the sum of its proper divisors (118757643).

355998261 is a wasteful number, since it uses less digits than its factorization.

355998261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22891.

The product of its digits is 583200, while the sum is 48.

The square root of 355998261 is about 18867.9161806491. The cubic root of 355998261 is about 708.7329521326.

The spelling of 355998261 in words is "three hundred fifty-five million, nine hundred ninety-eight thousand, two hundred sixty-one".