5154821 has 4 divisors (see below), whose sum is σ = 5891232. Its totient is φ = 4418412.

The previous prime is 5154817. The next prime is 5154823. The reversal of 5154821 is 1284515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1284515 = 5 ⋅256903.

It is a cyclic number.

It is not a de Polignac number, because 5154821 - 2² = 5154817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5154823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368195 + ... + 368208.

It is an arithmetic number, because the mean of its divisors is an integer number (1472808).

Almost surely, 2^5154821 is an apocalyptic number.

It is an amenable number.

5154821 is a deficient number, since it is larger than the sum of its proper divisors (736411).

5154821 is an equidigital number, since it uses as much as digits as its factorization.

5154821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736410.

The product of its digits is 1600, while the sum is 26.

The square root of 5154821 is about 2270.4230883252. The cubic root of 5154821 is about 172.7446196882.

It can be divided in two parts, 51 and 54821, that added together give a cube (54872 = 38³).

The spelling of 5154821 in words is "five million, one hundred fifty-four thousand, eight hundred twenty-one".