5211561021053 has 24 divisors (see below), whose sum is σ = 5610838867200. Its totient is φ = 4836725508384.

The previous prime is 5211561021049. The next prime is 5211561021089. The reversal of 5211561021053 is 3501201651125.

It is not a de Polignac number, because 5211561021053 - 2² = 5211561021049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5211561021253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6655868 + ... + 7397546.

It is an arithmetic number, because the mean of its divisors is an integer number (233784952800).

Almost surely, 2^{5211561021053} is an apocalyptic number.

It is an amenable number.

5211561021053 is a deficient number, since it is larger than the sum of its proper divisors (399277846147).

5211561021053 is a wasteful number, since it uses less digits than its factorization.

5211561021053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742121 (or 742098 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

Adding to 5211561021053 its reverse (3501201651125), we get a palindrome (8712762672178).

The spelling of 5211561021053 in words is "five trillion, two hundred eleven billion, five hundred sixty-one million, twenty-one thousand, fifty-three".