28201451 has 2 divisors, whose sum is σ = 28201452. Its totient is φ = 28201450.

The previous prime is 28201417. The next prime is 28201463. The reversal of 28201451 is 15410282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28201451 - 2⁶ = 28201387 is a prime.

It is a super-4 number, since 4×28201451⁴ (a number of 31 digits) contains 4444 as substring.

It is equal to p_1753133 and since 28201451 and 1753133 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28201471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14100725 + 14100726.

It is an arithmetic number, because the mean of its divisors is an integer number (14100726).

Almost surely, 2^28201451 is an apocalyptic number.

28201451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28201451 is an equidigital number, since it uses as much as digits as its factorization.

28201451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 28201451 is about 5310.5038367372. The cubic root of 28201451 is about 304.3854003645.

The spelling of 28201451 in words is "twenty-eight million, two hundred one thousand, four hundred fifty-one".