9221251 has 16 divisors (see below), whose sum is σ = 10746400. Its totient is φ = 7838208.

The previous prime is 9221249. The next prime is 9221257. The reversal of 9221251 is 1521229.

It is a cyclic number.

It is not a de Polignac number, because 9221251 - 2¹ = 9221249 is a prime.

9221251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9221257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8635 + ... + 9643.

It is an arithmetic number, because the mean of its divisors is an integer number (671650).

Almost surely, 2^9221251 is an apocalyptic number.

9221251 is a deficient number, since it is larger than the sum of its proper divisors (1525149).

9221251 is a wasteful number, since it uses less digits than its factorization.

9221251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078.

The product of its digits is 360, while the sum is 22.

The square root of 9221251 is about 3036.6512806050. The cubic root of 9221251 is about 209.6991231694.

Subtracting from 9221251 its sum of digits (22), we obtain a palindrome (9221229).

The spelling of 9221251 in words is "nine million, two hundred twenty-one thousand, two hundred fifty-one".