5705621 has 2 divisors, whose sum is σ = 5705622. Its totient is φ = 5705620.

The previous prime is 5705603. The next prime is 5705629. The reversal of 5705621 is 1265075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3422500 + 2283121 = 1850^2 + 1511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5705621 is a prime.

It is a super-2 number, since 2×5705621² = 65108221991282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5705629) 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, 2852810 + 2852811.

It is an arithmetic number, because the mean of its divisors is an integer number (2852811).

Almost surely, 2^5705621 is an apocalyptic number.

It is an amenable number.

5705621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5705621 is an equidigital number, since it uses as much as digits as its factorization.

5705621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 5705621 is about 2388.6441760966. The cubic root of 5705621 is about 178.6902980889.

The spelling of 5705621 in words is "five million, seven hundred five thousand, six hundred twenty-one".