5542021 has 2 divisors, whose sum is σ = 5542022. Its totient is φ = 5542020.

The previous prime is 5542013. The next prime is 5542027. The reversal of 5542021 is 1202455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5239521 + 302500 = 2289^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 5542021 - 2³ = 5542013 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5542021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5542027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2771010 + 2771011.

It is an arithmetic number, because the mean of its divisors is an integer number (2771011).

Almost surely, 2^5542021 is an apocalyptic number.

It is an amenable number.

5542021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5542021 is an equidigital number, since it uses as much as digits as its factorization.

5542021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 5542021 is about 2354.1497403521. The cubic root of 5542021 is about 176.9658184603.

Adding to 5542021 its reverse (1202455), we get a palindrome (6744476).

The spelling of 5542021 in words is "five million, five hundred forty-two thousand, twenty-one".