351774481 has 4 divisors (see below), whose sum is σ = 352466100. Its totient is φ = 351082864.

The previous prime is 351774473. The next prime is 351774487. The reversal of 351774481 is 184477153.

It is a happy number.

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 324900625 + 26873856 = 18025^2 + 5184^2 .

It is a cyclic number.

It is not a de Polignac number, because 351774481 - 2³ = 351774473 is a prime.

It is a super-2 number, since 2×351774481² = 247490570965638722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351774487) 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, 345046 + ... + 346063.

It is an arithmetic number, because the mean of its divisors is an integer number (88116525).

Almost surely, 2^351774481 is an apocalyptic number.

It is an amenable number.

351774481 is a deficient number, since it is larger than the sum of its proper divisors (691619).

351774481 is an equidigital number, since it uses as much as digits as its factorization.

351774481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691618.

The product of its digits is 94080, while the sum is 40.

The square root of 351774481 is about 18755.6519748048. The cubic root of 351774481 is about 705.9188468541.

The spelling of 351774481 in words is "three hundred fifty-one million, seven hundred seventy-four thousand, four hundred eighty-one".