59581981 has 2 divisors, whose sum is σ = 59581982. Its totient is φ = 59581980.

The previous prime is 59581939. The next prime is 59582023. The reversal of 59581981 is 18918595.

59581981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (59581939) and next prime (59582023).

It can be written as a sum of positive squares in only one way, i.e., 57304900 + 2277081 = 7570^2 + 1509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-59581981 is a prime.

It is a super-2 number, since 2×59581981² = 7100024919768722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (59881981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29790990 + 29790991.

It is an arithmetic number, because the mean of its divisors is an integer number (29790991).

Almost surely, 2^59581981 is an apocalyptic number.

It is an amenable number.

59581981 is a deficient number, since it is larger than the sum of its proper divisors (1).

59581981 is an equidigital number, since it uses as much as digits as its factorization.

59581981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 46.

The square root of 59581981 is about 7718.9365200136. The cubic root of 59581981 is about 390.5754839508.

The spelling of 59581981 in words is "fifty-nine million, five hundred eighty-one thousand, nine hundred eighty-one".