60557521 has 2 divisors, whose sum is σ = 60557522. Its totient is φ = 60557520.

The previous prime is 60557513. The next prime is 60557543. The reversal of 60557521 is 12575506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57456400 + 3101121 = 7580^2 + 1761^2 .

It is a cyclic number.

It is not a de Polignac number, because 60557521 - 2³ = 60557513 is a prime.

It is not a weakly prime, because it can be changed into another prime (60557821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30278760 + 30278761.

It is an arithmetic number, because the mean of its divisors is an integer number (30278761).

Almost surely, 2^60557521 is an apocalyptic number.

It is an amenable number.

60557521 is a deficient number, since it is larger than the sum of its proper divisors (1).

60557521 is an equidigital number, since it uses as much as digits as its factorization.

60557521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 60557521 is about 7781.8713045128. The cubic root of 60557521 is about 392.6955948331.

The spelling of 60557521 in words is "sixty million, five hundred fifty-seven thousand, five hundred twenty-one".