4975661 has 2 divisors, whose sum is σ = 4975662. Its totient is φ = 4975660.

The previous prime is 4975651. The next prime is 4975669. The reversal of 4975661 is 1665794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3204100 + 1771561 = 1790^2 + 1331^2 .

It is a cyclic number.

It is not a de Polignac number, because 4975661 - 2¹⁴ = 4959277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4975669) 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 as a sum of consecutive naturals, namely, 2487830 + 2487831.

It is an arithmetic number, because the mean of its divisors is an integer number (2487831).

Almost surely, 2^4975661 is an apocalyptic number.

It is an amenable number.

4975661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4975661 is an equidigital number, since it uses as much as digits as its factorization.

4975661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 4975661 is about 2230.6189723931. The cubic root of 4975661 is about 170.7196825414.

The spelling of 4975661 in words is "four million, nine hundred seventy-five thousand, six hundred sixty-one".