106506521 has 8 divisors (see below), whose sum is σ = 118381824. Its totient is φ = 94996720.

The previous prime is 106506511. The next prime is 106506527. The reversal of 106506521 is 125605601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106506521 is a prime.

It is a super-2 number, since 2×106506521² = 22687278031046882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106506527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90761 + ... + 91926.

It is an arithmetic number, because the mean of its divisors is an integer number (14797728).

Almost surely, 2^106506521 is an apocalyptic number.

106506521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

106506521 is a deficient number, since it is larger than the sum of its proper divisors (11875303).

106506521 is a wasteful number, since it uses less digits than its factorization.

106506521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182751.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 106506521 is about 10320.1996589213. The cubic root of 106506521 is about 474.0149796164.

It can be divided in two parts, 10650 and 6521, that added together give a palindrome (17171).

The spelling of 106506521 in words is "one hundred six million, five hundred six thousand, five hundred twenty-one".