4775621 has 2 divisors, whose sum is σ = 4775622. Its totient is φ = 4775620.

The previous prime is 4775591. The next prime is 4775647. The reversal of 4775621 is 1265774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3940225 + 835396 = 1985^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 4775621 - 2¹⁰ = 4774597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4775681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2387810 + 2387811.

It is an arithmetic number, because the mean of its divisors is an integer number (2387811).

Almost surely, 2^4775621 is an apocalyptic number.

It is an amenable number.

4775621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4775621 is an equidigital number, since it uses as much as digits as its factorization.

4775621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 32.

The square root of 4775621 is about 2185.3194274522. The cubic root of 4775621 is about 168.4004642442.

The spelling of 4775621 in words is "four million, seven hundred seventy-five thousand, six hundred twenty-one".