4637561 has 2 divisors, whose sum is σ = 4637562. Its totient is φ = 4637560.

The previous prime is 4637519. The next prime is 4637573. The reversal of 4637561 is 1657364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2621161 + 2016400 = 1619^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 4637561 - 2⁶ = 4637497 is a prime.

It is not a weakly prime, because it can be changed into another prime (4637261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2318780 + 2318781.

It is an arithmetic number, because the mean of its divisors is an integer number (2318781).

Almost surely, 2^4637561 is an apocalyptic number.

It is an amenable number.

4637561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4637561 is an equidigital number, since it uses as much as digits as its factorization.

4637561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 4637561 is about 2153.4997097748. The cubic root of 4637561 is about 166.7617888114.

The spelling of 4637561 in words is "four million, six hundred thirty-seven thousand, five hundred sixty-one".