10055621 has 2 divisors, whose sum is σ = 10055622. Its totient is φ = 10055620.

The previous prime is 10055597. The next prime is 10055629. The reversal of 10055621 is 12655001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6558721 + 3496900 = 2561^2 + 1870^2 .

It is an emirp because it is prime and its reverse (12655001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10055621 - 2¹⁸ = 9793477 is a prime.

It is a super-2 number, since 2×10055621² = 202231027391282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10055593 and 10055602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10055629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027810 + 5027811.

It is an arithmetic number, because the mean of its divisors is an integer number (5027811).

Almost surely, 2^10055621 is an apocalyptic number.

It is an amenable number.

10055621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10055621 is an equidigital number, since it uses as much as digits as its factorization.

10055621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 10055621 is about 3171.0599174409. The cubic root of 10055621 is about 215.8421700822.

The spelling of 10055621 in words is "ten million, fifty-five thousand, six hundred twenty-one".