8651261 has 2 divisors, whose sum is σ = 8651262. Its totient is φ = 8651260.

The previous prime is 8651239. The next prime is 8651267. The reversal of 8651261 is 1621568.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7896100 + 755161 = 2810^2 + 869^2 .

It is a cyclic number.

It is not a de Polignac number, because 8651261 - 2²² = 4456957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8651267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4325630 + 4325631.

It is an arithmetic number, because the mean of its divisors is an integer number (4325631).

Almost surely, 2^8651261 is an apocalyptic number.

It is an amenable number.

8651261 is a deficient number, since it is larger than the sum of its proper divisors (1).

8651261 is an equidigital number, since it uses as much as digits as its factorization.

8651261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 8651261 is about 2941.3026025895. The cubic root of 8651261 is about 205.2862232279.

The spelling of 8651261 in words is "eight million, six hundred fifty-one thousand, two hundred sixty-one".