354543121 has 2 divisors, whose sum is σ = 354543122. Its totient is φ = 354543120.

The previous prime is 354543107. The next prime is 354543151. The reversal of 354543121 is 121345453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340771600 + 13771521 = 18460^2 + 3711^2 .

It is an emirp because it is prime and its reverse (121345453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 354543121 - 2¹⁵ = 354510353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 354543121.

It is not a weakly prime, because it can be changed into another prime (354543151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177271560 + 177271561.

It is an arithmetic number, because the mean of its divisors is an integer number (177271561).

Almost surely, 2^354543121 is an apocalyptic number.

It is an amenable number.

354543121 is a deficient number, since it is larger than the sum of its proper divisors (1).

354543121 is an equidigital number, since it uses as much as digits as its factorization.

354543121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 354543121 is about 18829.3154681736. The cubic root of 354543121 is about 707.7659867175.

Adding to 354543121 its reverse (121345453), we get a palindrome (475888574).

The spelling of 354543121 in words is "three hundred fifty-four million, five hundred forty-three thousand, one hundred twenty-one".