28591151 has 2 divisors, whose sum is σ = 28591152. Its totient is φ = 28591150.

The previous prime is 28591103. The next prime is 28591153. The reversal of 28591151 is 15119582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28591151 - 2²² = 24396847 is a prime.

Together with 28591153, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28591153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14295575 + 14295576.

It is an arithmetic number, because the mean of its divisors is an integer number (14295576).

Almost surely, 2^28591151 is an apocalyptic number.

28591151 is a deficient number, since it is larger than the sum of its proper divisors (1).

28591151 is an equidigital number, since it uses as much as digits as its factorization.

28591151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 32.

The square root of 28591151 is about 5347.0693842515. The cubic root of 28591151 is about 305.7810350592.

The spelling of 28591151 in words is "twenty-eight million, five hundred ninety-one thousand, one hundred fifty-one".