58491281 has 2 divisors, whose sum is σ = 58491282. Its totient is φ = 58491280.

The previous prime is 58491269. The next prime is 58491287. The reversal of 58491281 is 18219485.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47831056 + 10660225 = 6916^2 + 3265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-58491281 is a prime.

It is a super-2 number, since 2×58491281² = 6842459906041922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (58491287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29245640 + 29245641.

It is an arithmetic number, because the mean of its divisors is an integer number (29245641).

Almost surely, 2^58491281 is an apocalyptic number.

It is an amenable number.

58491281 is a deficient number, since it is larger than the sum of its proper divisors (1).

58491281 is an equidigital number, since it uses as much as digits as its factorization.

58491281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 38.

The square root of 58491281 is about 7647.9592702890. The cubic root of 58491281 is about 388.1775169035.

The spelling of 58491281 in words is "fifty-eight million, four hundred ninety-one thousand, two hundred eighty-one".