5651524536521 has 2 divisors, whose sum is σ = 5651524536522. Its totient is φ = 5651524536520.

The previous prime is 5651524536479. The next prime is 5651524536587. The reversal of 5651524536521 is 1256354251565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3155010775225 + 2496513761296 = 1776235^2 + 1580036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5651524536521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5651524536521.

It is not a weakly prime, because it can be changed into another prime (5651526536521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2825762268260 + 2825762268261.

It is an arithmetic number, because the mean of its divisors is an integer number (2825762268261).

Almost surely, 2^{5651524536521} is an apocalyptic number.

It is an amenable number.

5651524536521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5651524536521 is an equidigital number, since it uses as much as digits as its factorization.

5651524536521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400000, while the sum is 50.

The spelling of 5651524536521 in words is "five trillion, six hundred fifty-one billion, five hundred twenty-four million, five hundred thirty-six thousand, five hundred twenty-one".