52609835821 has 2 divisors, whose sum is σ = 52609835822. Its totient is φ = 52609835820.

The previous prime is 52609835731. The next prime is 52609835879. The reversal of 52609835821 is 12853890625.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51749880196 + 859955625 = 227486^2 + 29325^2 .

It is a cyclic number.

It is not a de Polignac number, because 52609835821 - 2⁹ = 52609835309 is a prime.

It is a super-2 number, since 2×52609835821² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52609835891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26304917910 + 26304917911.

It is an arithmetic number, because the mean of its divisors is an integer number (26304917911).

Almost surely, 2^52609835821 is an apocalyptic number.

It is an amenable number.

52609835821 is a deficient number, since it is larger than the sum of its proper divisors (1).

52609835821 is an equidigital number, since it uses as much as digits as its factorization.

52609835821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 52609835821 in words is "fifty-two billion, six hundred nine million, eight hundred thirty-five thousand, eight hundred twenty-one".