58312721 has 2 divisors, whose sum is σ = 58312722. Its totient is φ = 58312720.

The previous prime is 58312717. The next prime is 58312733. The reversal of 58312721 is 12721385.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58308496 + 4225 = 7636^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 58312721 - 2² = 58312717 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (58312741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29156360 + 29156361.

It is an arithmetic number, because the mean of its divisors is an integer number (29156361).

Almost surely, 2^58312721 is an apocalyptic number.

It is an amenable number.

58312721 is a deficient number, since it is larger than the sum of its proper divisors (1).

58312721 is an equidigital number, since it uses as much as digits as its factorization.

58312721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 58312721 is about 7636.2766450673. The cubic root of 58312721 is about 387.7821096557.

The spelling of 58312721 in words is "fifty-eight million, three hundred twelve thousand, seven hundred twenty-one".