1081251 has 24 divisors (see below), whose sum is σ = 1707264. Its totient is φ = 656640.

The previous prime is 1081247. The next prime is 1081277. The reversal of 1081251 is 1521801.

It is not a de Polignac number, because 1081251 - 2² = 1081247 is a prime.

1081251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1081231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5566 + ... + 5756.

It is an arithmetic number, because the mean of its divisors is an integer number (71136).

2^1081251 is an apocalyptic number.

1081251 is a deficient number, since it is larger than the sum of its proper divisors (626013).

1081251 is a wasteful number, since it uses less digits than its factorization.

1081251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1081251 is about 1039.8321980012. The cubic root of 1081251 is about 102.6381559576.

The spelling of 1081251 in words is "one million, eighty-one thousand, two hundred fifty-one".