5249021 has 4 divisors (see below), whose sum is σ = 5276412. Its totient is φ = 5221632.

The previous prime is 5249017. The next prime is 5249033. The reversal of 5249021 is 1209425.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2059225 + 3189796 = 1435^2 + 1786^2 .

It is a cyclic number.

It is not a de Polignac number, because 5249021 - 2² = 5249017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5249011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13406 + ... + 13791.

It is an arithmetic number, because the mean of its divisors is an integer number (1319103).

Almost surely, 2^5249021 is an apocalyptic number.

It is an amenable number.

5249021 is a deficient number, since it is larger than the sum of its proper divisors (27391).

5249021 is a wasteful number, since it uses less digits than its factorization.

5249021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27390.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 5249021 is about 2291.0742022030. The cubic root of 5249021 is about 173.7905283026.

The spelling of 5249021 in words is "five million, two hundred forty-nine thousand, twenty-one".