58887721 has 4 divisors (see below), whose sum is σ = 59140692. Its totient is φ = 58634752.

The previous prime is 58887709. The next prime is 58887733. The reversal of 58887721 is 12778885.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (58887709) and next prime (58887733).

It can be written as a sum of positive squares in 2 ways, for example, as 6528025 + 52359696 = 2555^2 + 7236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-58887721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (58887761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126136 + ... + 126601.

It is an arithmetic number, because the mean of its divisors is an integer number (14785173).

Almost surely, 2^58887721 is an apocalyptic number.

It is an amenable number.

58887721 is a deficient number, since it is larger than the sum of its proper divisors (252971).

58887721 is a wasteful number, since it uses less digits than its factorization.

58887721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252970.

The product of its digits is 250880, while the sum is 46.

The square root of 58887721 is about 7673.8335269929. The cubic root of 58887721 is about 389.0525346318.

The spelling of 58887721 in words is "fifty-eight million, eight hundred eighty-seven thousand, seven hundred twenty-one".