5506061021 has 2 divisors, whose sum is σ = 5506061022. Its totient is φ = 5506061020.

The previous prime is 5506061003. The next prime is 5506061023. The reversal of 5506061021 is 1201606055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5298384100 + 207676921 = 72790^2 + 14411^2 .

It is a cyclic number.

It is not a de Polignac number, because 5506061021 - 2⁶ = 5506060957 is a prime.

Together with 5506061023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5506061023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2753030510 + 2753030511.

It is an arithmetic number, because the mean of its divisors is an integer number (2753030511).

Almost surely, 2^5506061021 is an apocalyptic number.

It is an amenable number.

5506061021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5506061021 is an equidigital number, since it uses as much as digits as its factorization.

5506061021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 5506061021 is about 74202.8370144970. The cubic root of 5506061021 is about 1765.8223391830.

Adding to 5506061021 its reverse (1201606055), we get a palindrome (6707667076).

The spelling of 5506061021 in words is "five billion, five hundred six million, sixty-one thousand, twenty-one".