84214251 has 24 divisors (see below), whose sum is σ = 139688640. Its totient is φ = 48351600.

The previous prime is 84214241. The next prime is 84214261. The reversal of 84214251 is 15241248.

It is an interprime number because it is at equal distance from previous prime (84214241) and next prime (84214261).

It is not a de Polignac number, because 84214251 - 2⁵ = 84214219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84214241) 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 in 23 ways as a sum of consecutive naturals, for example, 20505 + ... + 24266.

It is an arithmetic number, because the mean of its divisors is an integer number (5820360).

Almost surely, 2^84214251 is an apocalyptic number.

84214251 is a deficient number, since it is larger than the sum of its proper divisors (55474389).

84214251 is a wasteful number, since it uses less digits than its factorization.

84214251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44807 (or 44804 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 84214251 is about 9176.8322966043. The cubic root of 84214251 is about 438.3239456257.

Adding to 84214251 its reverse (15241248), we get a palindrome (99455499).

The spelling of 84214251 in words is "eighty-four million, two hundred fourteen thousand, two hundred fifty-one".