9881251 has 4 divisors (see below), whose sum is σ = 9887632. Its totient is φ = 9874872.

The previous prime is 9881239. The next prime is 9881269. The reversal of 9881251 is 1521889.

9881251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9881251 - 2²³ = 1492643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9881231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781 + ... + 4513.

It is an arithmetic number, because the mean of its divisors is an integer number (2471908).

Almost surely, 2^9881251 is an apocalyptic number.

9881251 is a deficient number, since it is larger than the sum of its proper divisors (6381).

9881251 is a wasteful number, since it uses less digits than its factorization.

9881251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380.

The product of its digits is 5760, while the sum is 34.

The square root of 9881251 is about 3143.4457208611. The cubic root of 9881251 is about 214.5872810744.

The spelling of 9881251 in words is "nine million, eight hundred eighty-one thousand, two hundred fifty-one".