106651555 has 4 divisors (see below), whose sum is σ = 127981872. Its totient is φ = 85321240.

The previous prime is 106651549. The next prime is 106651561. The reversal of 106651555 is 555156601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555156601 = 1483 ⋅374347.

It is an interprime number because it is at equal distance from previous prime (106651549) and next prime (106651561).

It is not a de Polignac number, because 106651555 - 2¹¹ = 106649507 is a prime.

It is a super-2 number, since 2×106651555² = 22749108367836050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106651555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10665151 + ... + 10665160.

It is an arithmetic number, because the mean of its divisors is an integer number (31995468).

Almost surely, 2^106651555 is an apocalyptic number.

106651555 is a deficient number, since it is larger than the sum of its proper divisors (21330317).

106651555 is an equidigital number, since it uses as much as digits as its factorization.

106651555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21330316.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 106651555 is about 10327.2239735565. The cubic root of 106651555 is about 474.2300434635.

The spelling of 106651555 in words is "one hundred six million, six hundred fifty-one thousand, five hundred fifty-five".