4513661 has 2 divisors, whose sum is σ = 4513662. Its totient is φ = 4513660.

The previous prime is 4513643. The next prime is 4513669. The reversal of 4513661 is 1663154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2839225 + 1674436 = 1685^2 + 1294^2 .

It is a cyclic number.

It is not a de Polignac number, because 4513661 - 2²² = 319357 is a prime.

It is equal to p₃₁₆₈₂₆ and since 4513661 and 316826 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4513661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4513669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2256830 + 2256831.

It is an arithmetic number, because the mean of its divisors is an integer number (2256831).

Almost surely, 2^4513661 is an apocalyptic number.

It is an amenable number.

4513661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4513661 is an equidigital number, since it uses as much as digits as its factorization.

4513661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 4513661 is about 2124.5378320943. The cubic root of 4513661 is about 165.2632589610.

The spelling of 4513661 in words is "four million, five hundred thirteen thousand, six hundred sixty-one".