106521773 has 2 divisors, whose sum is σ = 106521774. Its totient is φ = 106521772.

The previous prime is 106521757. The next prime is 106521791. The reversal of 106521773 is 377125601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100060009 + 6461764 = 10003^2 + 2542^2 .

It is an emirp because it is prime and its reverse (377125601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106521773 - 2⁴ = 106521757 is a prime.

It is a super-2 number, since 2×106521773² = 22693776246127058, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106521703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53260886 + 53260887.

It is an arithmetic number, because the mean of its divisors is an integer number (53260887).

Almost surely, 2^106521773 is an apocalyptic number.

It is an amenable number.

106521773 is a deficient number, since it is larger than the sum of its proper divisors (1).

106521773 is an equidigital number, since it uses as much as digits as its factorization.

106521773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 106521773 is about 10320.9385716610. The cubic root of 106521773 is about 474.0376052464.

The spelling of 106521773 in words is "one hundred six million, five hundred twenty-one thousand, seven hundred seventy-three".