106255621 has 2 divisors, whose sum is σ = 106255622. Its totient is φ = 106255620.

The previous prime is 106255613. The next prime is 106255663. The reversal of 106255621 is 126552601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77686596 + 28569025 = 8814^2 + 5345^2 .

It is a cyclic number.

It is not a de Polignac number, because 106255621 - 2³ = 106255613 is a prime.

It is a super-2 number, since 2×106255621² = 22580513988191282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106255621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106255691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53127810 + 53127811.

It is an arithmetic number, because the mean of its divisors is an integer number (53127811).

Almost surely, 2^106255621 is an apocalyptic number.

It is an amenable number.

106255621 is a deficient number, since it is larger than the sum of its proper divisors (1).

106255621 is an equidigital number, since it uses as much as digits as its factorization.

106255621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 106255621 is about 10308.0367189878. The cubic root of 106255621 is about 473.6424707512.

The spelling of 106255621 in words is "one hundred six million, two hundred fifty-five thousand, six hundred twenty-one".