28252151 has 2 divisors, whose sum is σ = 28252152. Its totient is φ = 28252150.

The previous prime is 28252117. The next prime is 28252153. The reversal of 28252151 is 15125282.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28252151 is a prime.

It is a super-3 number, since 3×28252151³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 28252153, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28252151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28252153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14126075 + 14126076.

It is an arithmetic number, because the mean of its divisors is an integer number (14126076).

Almost surely, 2^28252151 is an apocalyptic number.

28252151 is a deficient number, since it is larger than the sum of its proper divisors (1).

28252151 is an equidigital number, since it uses as much as digits as its factorization.

28252151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 26.

The square root of 28252151 is about 5315.2752515745. The cubic root of 28252151 is about 304.5676971435.

The spelling of 28252151 in words is "twenty-eight million, two hundred fifty-two thousand, one hundred fifty-one".