354520109 has 2 divisors, whose sum is σ = 354520110. Its totient is φ = 354520108.

The previous prime is 354520097. The next prime is 354520147. The reversal of 354520109 is 901025453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314956009 + 39564100 = 17747^2 + 6290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354520109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354520169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177260054 + 177260055.

It is an arithmetic number, because the mean of its divisors is an integer number (177260055).

Almost surely, 2^354520109 is an apocalyptic number.

It is an amenable number.

354520109 is a deficient number, since it is larger than the sum of its proper divisors (1).

354520109 is an equidigital number, since it uses as much as digits as its factorization.

354520109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 354520109 is about 18828.7043898405. The cubic root of 354520109 is about 707.7506736170.

The spelling of 354520109 in words is "three hundred fifty-four million, five hundred twenty thousand, one hundred nine".