12054521 has 2 divisors, whose sum is σ = 12054522. Its totient is φ = 12054520.

The previous prime is 12054509. The next prime is 12054527. The reversal of 12054521 is 12545021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11999296 + 55225 = 3464^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 12054521 - 2¹⁰ = 12053497 is a prime.

It is a super-2 number, since 2×12054521² = 290622953078882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12054493 and 12054502.

It is not a weakly prime, because it can be changed into another prime (12054527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6027260 + 6027261.

It is an arithmetic number, because the mean of its divisors is an integer number (6027261).

Almost surely, 2^12054521 is an apocalyptic number.

It is an amenable number.

12054521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12054521 is an equidigital number, since it uses as much as digits as its factorization.

12054521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 12054521 is about 3471.9621253695. The cubic root of 12054521 is about 229.2890523074.

Adding to 12054521 its reverse (12545021), we get a palindrome (24599542).

The spelling of 12054521 in words is "twelve million, fifty-four thousand, five hundred twenty-one".