354280457 has 2 divisors, whose sum is σ = 354280458. Its totient is φ = 354280456.

The previous prime is 354280393. The next prime is 354280469. The reversal of 354280457 is 754082453.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300536896 + 53743561 = 17336^2 + 7331^2 .

It is a cyclic number.

It is not a de Polignac number, because 354280457 - 2⁶ = 354280393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 354280457.

It is not a weakly prime, because it can be changed into another prime (354289457) 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, 177140228 + 177140229.

It is an arithmetic number, because the mean of its divisors is an integer number (177140229).

Almost surely, 2^354280457 is an apocalyptic number.

It is an amenable number.

354280457 is a deficient number, since it is larger than the sum of its proper divisors (1).

354280457 is an equidigital number, since it uses as much as digits as its factorization.

354280457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 354280457 is about 18822.3393073231. The cubic root of 354280457 is about 707.5911602415.

The spelling of 354280457 in words is "three hundred fifty-four million, two hundred eighty thousand, four hundred fifty-seven".