8251881 has 8 divisors (see below), whose sum is σ = 12002784. Its totient is φ = 5001120.

The previous prime is 8251877. The next prime is 8251907. The reversal of 8251881 is 1881528.

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

It is not a de Polignac number, because 8251881 - 2² = 8251877 is a prime.

It is a super-2 number, since 2×8251881² = 136187080076322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 250057 = 8251881 / (8 + 2 + 5 + 1 + 8 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (8251781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124996 + ... + 125061.

It is an arithmetic number, because the mean of its divisors is an integer number (1500348).

Almost surely, 2^8251881 is an apocalyptic number.

It is an amenable number.

8251881 is a deficient number, since it is larger than the sum of its proper divisors (3750903).

8251881 is a wasteful number, since it uses less digits than its factorization.

8251881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250071.

The product of its digits is 5120, while the sum is 33.

The square root of 8251881 is about 2872.6087446779. The cubic root of 8251881 is about 202.0773565762.

The spelling of 8251881 in words is "eight million, two hundred fifty-one thousand, eight hundred eighty-one".