5534777621 has 2 divisors, whose sum is σ = 5534777622. Its totient is φ = 5534777620.

The previous prime is 5534777617. The next prime is 5534777659. The reversal of 5534777621 is 1267774355.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5533276996 + 1500625 = 74386^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 5534777621 - 2² = 5534777617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5534777021) 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 as a sum of consecutive naturals, namely, 2767388810 + 2767388811.

It is an arithmetic number, because the mean of its divisors is an integer number (2767388811).

Almost surely, 2^5534777621 is an apocalyptic number.

It is an amenable number.

5534777621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5534777621 is an equidigital number, since it uses as much as digits as its factorization.

5534777621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1234800, while the sum is 47.

The square root of 5534777621 is about 74396.0860596846. The cubic root of 5534777621 is about 1768.8868719080.

The spelling of 5534777621 in words is "five billion, five hundred thirty-four million, seven hundred seventy-seven thousand, six hundred twenty-one".