351922561 has 4 divisors (see below), whose sum is σ = 356743492. Its totient is φ = 347101632.

The previous prime is 351922553. The next prime is 351922583. The reversal of 351922561 is 165229153.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106812225 + 245110336 = 10335^2 + 15656^2 .

It is a cyclic number.

It is not a de Polignac number, because 351922561 - 2³ = 351922553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351922531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2410356 + ... + 2410501.

It is an arithmetic number, because the mean of its divisors is an integer number (89185873).

Almost surely, 2^351922561 is an apocalyptic number.

It is an amenable number.

351922561 is a deficient number, since it is larger than the sum of its proper divisors (4820931).

351922561 is an equidigital number, since it uses as much as digits as its factorization.

351922561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4820930.

The product of its digits is 16200, while the sum is 34.

The square root of 351922561 is about 18759.5991694919. The cubic root of 351922561 is about 706.0178854941.

The spelling of 351922561 in words is "three hundred fifty-one million, nine hundred twenty-two thousand, five hundred sixty-one".