106551623 has 4 divisors (see below), whose sum is σ = 107140488. Its totient is φ = 105962760.

The previous prime is 106551607. The next prime is 106551629. The reversal of 106551623 is 326155601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326155601 = 10531 ⋅30971.

It is a cyclic number.

It is not a de Polignac number, because 106551623 - 2⁴ = 106551607 is a prime.

It is a super-2 number, since 2×106551623² = 22706496727868258, 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 (106551629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294161 + ... + 294522.

It is an arithmetic number, because the mean of its divisors is an integer number (26785122).

Almost surely, 2^106551623 is an apocalyptic number.

106551623 is a deficient number, since it is larger than the sum of its proper divisors (588865).

106551623 is an equidigital number, since it uses as much as digits as its factorization.

106551623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588864.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 106551623 is about 10322.3845597807. The cubic root of 106551623 is about 474.0818800790.

The spelling of 106551623 in words is "one hundred six million, five hundred fifty-one thousand, six hundred twenty-three".