60755561 has 2 divisors, whose sum is σ = 60755562. Its totient is φ = 60755560.

The previous prime is 60755549. The next prime is 60755579. The reversal of 60755561 is 16555706.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60543961 + 211600 = 7781^2 + 460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60755561 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (60757561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30377780 + 30377781.

It is an arithmetic number, because the mean of its divisors is an integer number (30377781).

Almost surely, 2^60755561 is an apocalyptic number.

It is an amenable number.

60755561 is a deficient number, since it is larger than the sum of its proper divisors (1).

60755561 is an equidigital number, since it uses as much as digits as its factorization.

60755561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 60755561 is about 7794.5853642128. The cubic root of 60755561 is about 393.1232037801.

It can be divided in two parts, 60755 and 561, that added together give a palindrome (61316).

The spelling of 60755561 in words is "sixty million, seven hundred fifty-five thousand, five hundred sixty-one".