10521361 has 2 divisors, whose sum is σ = 10521362. Its totient is φ = 10521360.

The previous prime is 10521359. The next prime is 10521377. The reversal of 10521361 is 16312501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8880400 + 1640961 = 2980^2 + 1281^2 .

It is a cyclic number.

It is not a de Polignac number, because 10521361 - 2¹ = 10521359 is a prime.

It is a super-2 number, since 2×10521361² = 221398074584642, which contains 22 as substring.

Together with 10521359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10521311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260680 + 5260681.

It is an arithmetic number, because the mean of its divisors is an integer number (5260681).

Almost surely, 2^10521361 is an apocalyptic number.

It is an amenable number.

10521361 is a deficient number, since it is larger than the sum of its proper divisors (1).

10521361 is an equidigital number, since it uses as much as digits as its factorization.

10521361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 10521361 is about 3243.6647483980. The cubic root of 10521361 is about 219.1243499159.

Adding to 10521361 its reverse (16312501), we get a palindrome (26833862).

The spelling of 10521361 in words is "ten million, five hundred twenty-one thousand, three hundred sixty-one".