60521609 has 2 divisors, whose sum is σ = 60521610. Its totient is φ = 60521608.

The previous prime is 60521561. The next prime is 60521623. The reversal of 60521609 is 90612506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54346384 + 6175225 = 7372^2 + 2485^2 .

It is a cyclic number.

It is not a de Polignac number, because 60521609 - 2²⁰ = 59473033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (60521639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30260804 + 30260805.

It is an arithmetic number, because the mean of its divisors is an integer number (30260805).

Almost surely, 2^60521609 is an apocalyptic number.

It is an amenable number.

60521609 is a deficient number, since it is larger than the sum of its proper divisors (1).

60521609 is an equidigital number, since it uses as much as digits as its factorization.

60521609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 60521609 is about 7779.5635481690. The cubic root of 60521609 is about 392.6179536495.

The spelling of 60521609 in words is "sixty million, five hundred twenty-one thousand, six hundred nine".