5388021 has 6 divisors (see below), whose sum is σ = 7782710. Its totient is φ = 3592008.

The previous prime is 5388013. The next prime is 5388023. The reversal of 5388021 is 1208835.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4040100 + 1347921 = 2010^2 + 1161^2 .

It is not a de Polignac number, because 5388021 - 2³ = 5388013 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 (5388023) 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 5 ways as a sum of consecutive naturals, for example, 299326 + ... + 299343.

Almost surely, 2^5388021 is an apocalyptic number.

It is an amenable number.

5388021 is a deficient number, since it is larger than the sum of its proper divisors (2394689).

5388021 is a wasteful number, since it uses less digits than its factorization.

5388021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598675 (or 598672 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 5388021 is about 2321.2111062977. The cubic root of 5388021 is about 175.3112393267.

The spelling of 5388021 in words is "five million, three hundred eighty-eight thousand, twenty-one".