8148561 has 4 divisors (see below), whose sum is σ = 10864752. Its totient is φ = 5432372.

The previous prime is 8148557. The next prime is 8148571. The reversal of 8148561 is 1658418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8148561 - 2² = 8148557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8148521) 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, 1358091 + ... + 1358096.

It is an arithmetic number, because the mean of its divisors is an integer number (2716188).

Almost surely, 2^8148561 is an apocalyptic number.

It is an amenable number.

8148561 is a deficient number, since it is larger than the sum of its proper divisors (2716191).

8148561 is a wasteful number, since it uses less digits than its factorization.

8148561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716190.

The product of its digits is 7680, while the sum is 33.

The square root of 8148561 is about 2854.5684437407. The cubic root of 8148561 is about 201.2304231050.

The spelling of 8148561 in words is "eight million, one hundred forty-eight thousand, five hundred sixty-one".