5436051021 has 20 divisors (see below), whose sum is σ = 8133972352. Its totient is φ = 3618030888.

The previous prime is 5436051007. The next prime is 5436051043. The reversal of 5436051021 is 1201506345.

5436051021 is a `hidden beast` number, since 5 + 43 + 605 + 10 + 2 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-5436051021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5436051001) 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 in 19 ways as a sum of consecutive naturals, for example, 6115 + ... + 104448.

Almost surely, 2^5436051021 is an apocalyptic number.

It is an amenable number.

5436051021 is a deficient number, since it is larger than the sum of its proper divisors (2697921331).

5436051021 is a wasteful number, since it uses less digits than its factorization.

5436051021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111182 (or 111173 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 5436051021 is about 73729.5803663631. The cubic root of 5436051021 is about 1758.3062024150.

Adding to 5436051021 its reverse (1201506345), we get a palindrome (6637557366).

The spelling of 5436051021 in words is "five billion, four hundred thirty-six million, fifty-one thousand, twenty-one".