354535981 has 2 divisors, whose sum is σ = 354535982. Its totient is φ = 354535980.

The previous prime is 354535967. The next prime is 354535997. The reversal of 354535981 is 189535453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352312900 + 2223081 = 18770^2 + 1491^2 .

It is an emirp because it is prime and its reverse (189535453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 354535981 - 2¹⁷ = 354404909 is a prime.

It is a super-2 number, since 2×354535981² = 251391523647264722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354535931) 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 as a sum of consecutive naturals, namely, 177267990 + 177267991.

It is an arithmetic number, because the mean of its divisors is an integer number (177267991).

Almost surely, 2^354535981 is an apocalyptic number.

It is an amenable number.

354535981 is a deficient number, since it is larger than the sum of its proper divisors (1).

354535981 is an equidigital number, since it uses as much as digits as its factorization.

354535981 is an odious number, because the sum of its binary digits is odd.

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

The square root of 354535981 is about 18829.1258692484. The cubic root of 354535981 is about 707.7612355483.

The spelling of 354535981 in words is "three hundred fifty-four million, five hundred thirty-five thousand, nine hundred eighty-one".