52603551421 has 2 divisors, whose sum is σ = 52603551422. Its totient is φ = 52603551420.

The previous prime is 52603551419. The next prime is 52603551437. The reversal of 52603551421 is 12415530625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34304225796 + 18299325625 = 185214^2 + 135275^2 .

It is a cyclic number.

It is not a de Polignac number, because 52603551421 - 2¹ = 52603551419 is a prime.

It is a super-2 number, since 2×52603551421² (a number of 22 digits) contains 22 as substring.

Together with 52603551419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52606551421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26301775710 + 26301775711.

It is an arithmetic number, because the mean of its divisors is an integer number (26301775711).

Almost surely, 2^52603551421 is an apocalyptic number.

It is an amenable number.

52603551421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52603551421 is an equidigital number, since it uses as much as digits as its factorization.

52603551421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 52603551421 in words is "fifty-two billion, six hundred three million, five hundred fifty-one thousand, four hundred twenty-one".