58891561 has 2 divisors, whose sum is σ = 58891562. Its totient is φ = 58891560.

The previous prime is 58891549. The next prime is 58891579. The reversal of 58891561 is 16519885.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54243225 + 4648336 = 7365^2 + 2156^2 .

It is a cyclic number.

It is not a de Polignac number, because 58891561 - 2⁵ = 58891529 is a prime.

It is not a weakly prime, because it can be changed into another prime (58891541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29445780 + 29445781.

It is an arithmetic number, because the mean of its divisors is an integer number (29445781).

Almost surely, 2^58891561 is an apocalyptic number.

It is an amenable number.

58891561 is a deficient number, since it is larger than the sum of its proper divisors (1).

58891561 is an equidigital number, since it uses as much as digits as its factorization.

58891561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 43.

The square root of 58891561 is about 7674.0837238070. The cubic root of 58891561 is about 389.0609910029.

The spelling of 58891561 in words is "fifty-eight million, eight hundred ninety-one thousand, five hundred sixty-one".