353961 has 12 divisors (see below), whose sum is σ = 519792. Its totient is φ = 232056.

The previous prime is 353939. The next prime is 353963. The reversal of 353961 is 169353.

It is not a de Polignac number, because 353961 - 2⁵ = 353929 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (353963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310 + ... + 896.

It is an arithmetic number, because the mean of its divisors is an integer number (43316).

2³⁵³⁹⁶¹ is an apocalyptic number.

It is an amenable number.

353961 is a deficient number, since it is larger than the sum of its proper divisors (165831).

353961 is a wasteful number, since it uses less digits than its factorization.

353961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 657 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 353961 is about 594.9462160565. The cubic root of 353961 is about 70.7378416429.

It can be divided in two parts, 3539 and 61, that added together give a square (3600 = 60²).

The spelling of 353961 in words is "three hundred fifty-three thousand, nine hundred sixty-one".