355981543 has 8 divisors (see below), whose sum is σ = 363014960. Its totient is φ = 348986880.

The previous prime is 355981541. The next prime is 355981553. The reversal of 355981543 is 345189553.

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 355981543 - 2¹ = 355981541 is a prime.

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 355981543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355981541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9223 + ... + 28231.

It is an arithmetic number, because the mean of its divisors is an integer number (45376870).

Almost surely, 2^355981543 is an apocalyptic number.

355981543 is a deficient number, since it is larger than the sum of its proper divisors (7033417).

355981543 is a wasteful number, since it uses less digits than its factorization.

355981543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19377.

The product of its digits is 324000, while the sum is 43.

The square root of 355981543 is about 18867.4731482517. The cubic root of 355981543 is about 708.7218577124.

The spelling of 355981543 in words is "three hundred fifty-five million, nine hundred eighty-one thousand, five hundred forty-three".