9121251 has 8 divisors (see below), whose sum is σ = 12214800. Its totient is φ = 6054272.

The previous prime is 9121249. The next prime is 9121279. The reversal of 9121251 is 1521219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9121251 - 2¹ = 9121249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9121241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5826 + ... + 7223.

It is an arithmetic number, because the mean of its divisors is an integer number (1526850).

Almost surely, 2^9121251 is an apocalyptic number.

9121251 is a deficient number, since it is larger than the sum of its proper divisors (3093549).

9121251 is a wasteful number, since it uses less digits than its factorization.

9121251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13285.

The product of its digits is 180, while the sum is 21.

The square root of 9121251 is about 3020.1408907533. The cubic root of 9121251 is about 208.9383379215.

The spelling of 9121251 in words is "nine million, one hundred twenty-one thousand, two hundred fifty-one".