106293821 has 2 divisors, whose sum is σ = 106293822. Its totient is φ = 106293820.

The previous prime is 106293791. The next prime is 106293839. The reversal of 106293821 is 128392601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 51681721 = 7390^2 + 7189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106293821 is a prime.

It is a super-2 number, since 2×106293821² = 22596752765560082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106293841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53146910 + 53146911.

It is an arithmetic number, because the mean of its divisors is an integer number (53146911).

Almost surely, 2^106293821 is an apocalyptic number.

It is an amenable number.

106293821 is a deficient number, since it is larger than the sum of its proper divisors (1).

106293821 is an equidigital number, since it uses as much as digits as its factorization.

106293821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 106293821 is about 10309.8894756442. The cubic root of 106293821 is about 473.6992237475.

The spelling of 106293821 in words is "one hundred six million, two hundred ninety-three thousand, eight hundred twenty-one".