60559991 has 2 divisors, whose sum is σ = 60559992. Its totient is φ = 60559990.

The previous prime is 60559981. The next prime is 60559999. The reversal of 60559991 is 19995506.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60559991 - 2⁶ = 60559927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60559999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30279995 + 30279996.

It is an arithmetic number, because the mean of its divisors is an integer number (30279996).

Almost surely, 2^60559991 is an apocalyptic number.

60559991 is a deficient number, since it is larger than the sum of its proper divisors (1).

60559991 is an equidigital number, since it uses as much as digits as its factorization.

60559991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 60559991 is about 7782.0300050822. The cubic root of 60559991 is about 392.7009338062.

The spelling of 60559991 in words is "sixty million, five hundred fifty-nine thousand, nine hundred ninety-one".