5537635821 has 32 divisors (see below), whose sum is σ = 8432899200. Its totient is φ = 3588883200.

The previous prime is 5537635819. The next prime is 5537635837. The reversal of 5537635821 is 1285367355.

5537635821 is a `hidden beast` number, since 5 + 5 + 3 + 7 + 63 + 582 + 1 = 666.

It is not a de Polignac number, because 5537635821 - 2¹ = 5537635819 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5537635801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1975621 + ... + 1978421.

It is an arithmetic number, because the mean of its divisors is an integer number (263528100).

Almost surely, 2^5537635821 is an apocalyptic number.

It is an amenable number.

5537635821 is a deficient number, since it is larger than the sum of its proper divisors (2895263379).

5537635821 is a wasteful number, since it uses less digits than its factorization.

5537635821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826 (or 4820 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 5537635821 is about 74415.2929242370. The cubic root of 5537635821 is about 1769.1913082536.

The spelling of 5537635821 in words is "five billion, five hundred thirty-seven million, six hundred thirty-five thousand, eight hundred twenty-one".