106521247 has 6 divisors (see below), whose sum is σ = 123912528. Its totient is φ = 91303884.

The previous prime is 106521241. The next prime is 106521251. The reversal of 106521247 is 742125601.

It is not a de Polignac number, because 106521247 - 2¹¹ = 106519199 is a prime.

It is a super-2 number, since 2×106521247² = 22693552124870018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106521241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1086903 + ... + 1087000.

It is an arithmetic number, because the mean of its divisors is an integer number (20652088).

Almost surely, 2^106521247 is an apocalyptic number.

106521247 is a deficient number, since it is larger than the sum of its proper divisors (17391281).

106521247 is an equidigital number, since it uses as much as digits as its factorization.

106521247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173917 (or 2173910 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 106521247 is about 10320.9130894510. The cubic root of 106521247 is about 474.0368249859.

Adding to 106521247 its reverse (742125601), we get a palindrome (848646848).

The spelling of 106521247 in words is "one hundred six million, five hundred twenty-one thousand, two hundred forty-seven".