8191451 has 6 divisors (see below), whose sum is σ = 8645652. Its totient is φ = 7759980.

The previous prime is 8191441. The next prime is 8191493. The reversal of 8191451 is 1541918.

It is not a de Polignac number, because 8191451 - 2⁶ = 8191387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8191441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10985 + ... + 11706.

It is an arithmetic number, because the mean of its divisors is an integer number (1440942).

Almost surely, 2^8191451 is an apocalyptic number.

8191451 is a deficient number, since it is larger than the sum of its proper divisors (454201).

8191451 is a wasteful number, since it uses less digits than its factorization.

8191451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22729 (or 22710 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

The square root of 8191451 is about 2862.0711032398. The cubic root of 8191451 is about 201.5828646491.

The spelling of 8191451 in words is "eight million, one hundred ninety-one thousand, four hundred fifty-one".