8561457 has 20 divisors (see below), whose sum is σ = 13464880. Its totient is φ = 5406264.

The previous prime is 8561447. The next prime is 8561471. The reversal of 8561457 is 7541658.

It is not a de Polignac number, because 8561457 - 2¹⁴ = 8545073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8561407) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1243 + ... + 4320.

It is an arithmetic number, because the mean of its divisors is an integer number (673244).

Almost surely, 2^8561457 is an apocalyptic number.

It is an amenable number.

8561457 is a deficient number, since it is larger than the sum of its proper divisors (4903423).

8561457 is a wasteful number, since it uses less digits than its factorization.

8561457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5594 (or 5585 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 8561457 is about 2925.9967532450. The cubic root of 8561457 is about 204.5734298707.

The spelling of 8561457 in words is "eight million, five hundred sixty-one thousand, four hundred fifty-seven".