351898 has 4 divisors (see below), whose sum is σ = 527850. Its totient is φ = 175948.

The previous prime is 351887. The next prime is 351913. The reversal of 351898 is 898153.

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

It can be written as a sum of positive squares in only one way, i.e., 205209 + 146689 = 453^2 + 383^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87973 + ... + 87976.

2³⁵¹⁸⁹⁸ is an apocalyptic number.

351898 is a deficient number, since it is larger than the sum of its proper divisors (175952).

351898 is a wasteful number, since it uses less digits than its factorization.

351898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175951.

The product of its digits is 8640, while the sum is 34.

The square root of 351898 is about 593.2099122570. The cubic root of 351898 is about 70.6001460566.

It can be divided in two parts, 35 and 1898, that multiplied together give a triangular number (66430 = T₃₆₄).

The spelling of 351898 in words is "three hundred fifty-one thousand, eight hundred ninety-eight".