8945261 has 4 divisors (see below), whose sum is σ = 9633372. Its totient is φ = 8257152.

The previous prime is 8945221. The next prime is 8945263. The reversal of 8945261 is 1625498.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3276100 + 5669161 = 1810^2 + 2381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8945261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8945263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344036 + ... + 344061.

It is an arithmetic number, because the mean of its divisors is an integer number (2408343).

Almost surely, 2^8945261 is an apocalyptic number.

It is an amenable number.

8945261 is a deficient number, since it is larger than the sum of its proper divisors (688111).

8945261 is a wasteful number, since it uses less digits than its factorization.

8945261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688110.

The product of its digits is 17280, while the sum is 35.

The square root of 8945261 is about 2990.8629189583. The cubic root of 8945261 is about 207.5858144111.

The spelling of 8945261 in words is "eight million, nine hundred forty-five thousand, two hundred sixty-one".