5812921 has 3 divisors (see below), whose sum is σ = 5815333. Its totient is φ = 5810510.

The previous prime is 5812907. The next prime is 5812927. The reversal of 5812921 is 1292185.

The square root of 5812921 is 2411.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1292185 = 5 ⋅258437.

It is not a de Polignac number, because 5812921 - 2⁵ = 5812889 is a prime.

It is a super-3 number, since 3×5812921³ (a number of 21 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5812921.

It is not an unprimeable number, because it can be changed into a prime (5812927) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1206 + ... + 3616.

Almost surely, 2^5812921 is an apocalyptic number.

5812921 is the 2411-st square number.

5812921 is the 1206-th centered octagonal number.

It is an amenable number.

5812921 is a deficient number, since it is larger than the sum of its proper divisors (2412).

5812921 is an frugal number, since it uses more digits than its factorization.

5812921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822 (or 2411 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The cubic root of 5812921 is about 179.8034995564.

The spelling of 5812921 in words is "five million, eight hundred twelve thousand, nine hundred twenty-one".