5542202021 has 4 divisors (see below), whose sum is σ = 5550848844. Its totient is φ = 5533555200.

The previous prime is 5542202009. The next prime is 5542202027. The reversal of 5542202021 is 1202022455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1202022455 = 5 ⋅240404491.

It can be written as a sum of positive squares in 2 ways, for example, as 4171351396 + 1370850625 = 64586^2 + 37025^2 .

It is a cyclic number.

It is not a de Polignac number, because 5542202021 - 2¹⁸ = 5541939877 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 (5542202027) 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, 4322450 + ... + 4323731.

It is an arithmetic number, because the mean of its divisors is an integer number (1387712211).

Almost surely, 2^5542202021 is an apocalyptic number.

It is an amenable number.

5542202021 is a deficient number, since it is larger than the sum of its proper divisors (8646823).

5542202021 is an equidigital number, since it uses as much as digits as its factorization.

5542202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8646822.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 5542202021 is about 74445.9671238140. The cubic root of 5542202021 is about 1769.6774520515.

Adding to 5542202021 its reverse (1202022455), we get a palindrome (6744224476).

The spelling of 5542202021 in words is "five billion, five hundred forty-two million, two hundred two thousand, twenty-one".