351491 has 8 divisors (see below), whose sum is σ = 405600. Its totient is φ = 298368.

The previous prime is 351479. The next prime is 351497. The reversal of 351491 is 194153.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 351491 - 2⁶ = 351427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 875 + ... + 1211.

It is an arithmetic number, because the mean of its divisors is an integer number (50700).

2³⁵¹⁴⁹¹ is an apocalyptic number.

351491 is a deficient number, since it is larger than the sum of its proper divisors (54109).

351491 is a wasteful number, since it uses less digits than its factorization.

351491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

The product of its digits is 540, while the sum is 23.

The square root of 351491 is about 592.8667641216. The cubic root of 351491 is about 70.5729171963.

The spelling of 351491 in words is "three hundred fifty-one thousand, four hundred ninety-one".