84250251 has 12 divisors (see below), whose sum is σ = 122369520. Its totient is φ = 55855440.

The previous prime is 84250213. The next prime is 84250253. The reversal of 84250251 is 15205248.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-84250251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84250253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24231 + ... + 27488.

It is an arithmetic number, because the mean of its divisors is an integer number (10197460).

Almost surely, 2^84250251 is an apocalyptic number.

84250251 is a deficient number, since it is larger than the sum of its proper divisors (38119269).

84250251 is a wasteful number, since it uses less digits than its factorization.

84250251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51906 (or 51903 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 84250251 is about 9178.7935481740. The cubic root of 84250251 is about 438.3863951275.

Adding to 84250251 its reverse (15205248), we get a palindrome (99455499).

The spelling of 84250251 in words is "eighty-four million, two hundred fifty thousand, two hundred fifty-one".