28058501 has 2 divisors, whose sum is σ = 28058502. Its totient is φ = 28058500.

The previous prime is 28058477. The next prime is 28058519. The reversal of 28058501 is 10585082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26770276 + 1288225 = 5174^2 + 1135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28058501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28058521) 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 as a sum of consecutive naturals, namely, 14029250 + 14029251.

It is an arithmetic number, because the mean of its divisors is an integer number (14029251).

Almost surely, 2^28058501 is an apocalyptic number.

It is an amenable number.

28058501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28058501 is an equidigital number, since it uses as much as digits as its factorization.

28058501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 28058501 is about 5297.0275626997. The cubic root of 28058501 is about 303.8702304218.

The spelling of 28058501 in words is "twenty-eight million, fifty-eight thousand, five hundred one".