106521386 has 4 divisors (see below), whose sum is σ = 159782082. Its totient is φ = 53260692.

The previous prime is 106521347. The next prime is 106521461. The reversal of 106521386 is 683125601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 105987025 + 534361 = 10295^2 + 731^2 .

It is a super-2 number, since 2×106521386² = 22693611350721992, which contains 22 as substring.

It is an unprimeable number.

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, 26630345 + ... + 26630348.

Almost surely, 2^106521386 is an apocalyptic number.

106521386 is a deficient number, since it is larger than the sum of its proper divisors (53260696).

106521386 is an equidigital number, since it uses as much as digits as its factorization.

106521386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53260695.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 106521386 is about 10320.9198233491. The cubic root of 106521386 is about 474.0370311767.

Adding to 106521386 its reverse (683125601), we get a palindrome (789646987).

The spelling of 106521386 in words is "one hundred six million, five hundred twenty-one thousand, three hundred eighty-six".