536642521 has 2 divisors, whose sum is σ = 536642522. Its totient is φ = 536642520.

The previous prime is 536642501. The next prime is 536642539. The reversal of 536642521 is 125246635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532686400 + 3956121 = 23080^2 + 1989^2 .

It is a cyclic number.

It is not a de Polignac number, because 536642521 - 2⁵ = 536642489 is a prime.

It is not a weakly prime, because it can be changed into another prime (536642501) 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, 268321260 + 268321261.

It is an arithmetic number, because the mean of its divisors is an integer number (268321261).

Almost surely, 2^536642521 is an apocalyptic number.

It is an amenable number.

536642521 is a deficient number, since it is larger than the sum of its proper divisors (1).

536642521 is an equidigital number, since it uses as much as digits as its factorization.

536642521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The square root of 536642521 is about 23165.5459896805. The cubic root of 536642521 is about 812.6340713193.

The spelling of 536642521 in words is "five hundred thirty-six million, six hundred forty-two thousand, five hundred twenty-one".