28251151 has 2 divisors, whose sum is σ = 28251152. Its totient is φ = 28251150.

The previous prime is 28251143. The next prime is 28251193. The reversal of 28251151 is 15115282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28251151 - 2³ = 28251143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28251101) 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, 14125575 + 14125576.

It is an arithmetic number, because the mean of its divisors is an integer number (14125576).

Almost surely, 2^28251151 is an apocalyptic number.

28251151 is a deficient number, since it is larger than the sum of its proper divisors (1).

28251151 is an equidigital number, since it uses as much as digits as its factorization.

28251151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 25.

The square root of 28251151 is about 5315.1811822364. The cubic root of 28251151 is about 304.5641036556.

The spelling of 28251151 in words is "twenty-eight million, two hundred fifty-one thousand, one hundred fifty-one".