354921 has 8 divisors (see below), whose sum is σ = 540864. Its totient is φ = 202800.

The previous prime is 354911. The next prime is 354953. The reversal of 354921 is 129453.

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

It is not a de Polignac number, because 354921 - 2¹⁰ = 353897 is a prime.

It is a Curzon number.

354921 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 354891 and 354900.

It is not an unprimeable number, because it can be changed into a prime (354911) 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, 8430 + ... + 8471.

It is an arithmetic number, because the mean of its divisors is an integer number (67608).

2³⁵⁴⁹²¹ is an apocalyptic number.

It is an amenable number.

354921 is a deficient number, since it is larger than the sum of its proper divisors (185943).

354921 is a wasteful number, since it uses less digits than its factorization.

354921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16911.

The product of its digits is 1080, while the sum is 24.

The square root of 354921 is about 595.7524653747. The cubic root of 354921 is about 70.8017347719.

It can be divided in two parts, 3549 and 21, that multiplied together give a square (74529 = 273²).

The spelling of 354921 in words is "three hundred fifty-four thousand, nine hundred twenty-one".