106521651 has 6 divisors (see below), whose sum is σ = 153864620. Its totient is φ = 71014428.

The previous prime is 106521637. The next prime is 106521683. The reversal of 106521651 is 156125601.

It is a happy number.

106521651 is a `hidden beast` number, since 1 + 0 + 6 + 5 + 2 + 1 + 651 = 666.

It is not a de Polignac number, because 106521651 - 2⁶ = 106521587 is a prime.

It is a super-2 number, since 2×106521651² = 22693724263531602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106521251) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 5917861 + ... + 5917878.

Almost surely, 2^106521651 is an apocalyptic number.

106521651 is a deficient number, since it is larger than the sum of its proper divisors (47342969).

106521651 is a wasteful number, since it uses less digits than its factorization.

106521651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11835745 (or 11835742 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 106521651 is about 10320.9326613441. The cubic root of 106521651 is about 474.0374242737.

The spelling of 106521651 in words is "one hundred six million, five hundred twenty-one thousand, six hundred fifty-one".