3154921 has 8 divisors (see below), whose sum is σ = 3933504. Its totient is φ = 2458320.

The previous prime is 3154903. The next prime is 3154967. The reversal of 3154921 is 1294513.

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

It is a cyclic number.

It is not a de Polignac number, because 3154921 - 2⁵ = 3154889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3154321) 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, 20410 + ... + 20563.

It is an arithmetic number, because the mean of its divisors is an integer number (491688).

Almost surely, 2^3154921 is an apocalyptic number.

It is an amenable number.

3154921 is a deficient number, since it is larger than the sum of its proper divisors (778583).

3154921 is a wasteful number, since it uses less digits than its factorization.

3154921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40991.

The product of its digits is 1080, while the sum is 25.

The square root of 3154921 is about 1776.2097286075. The cubic root of 3154921 is about 146.6660164113. Note that the first 3 decimals are identical.

The spelling of 3154921 in words is "three million, one hundred fifty-four thousand, nine hundred twenty-one".