106555531 has 4 divisors (see below), whose sum is σ = 107369064. Its totient is φ = 105742000.

The previous prime is 106555487. The next prime is 106555549. The reversal of 106555531 is 135555601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 106555531 - 2⁷ = 106555403 is a prime.

It is a super-2 number, since 2×106555531² = 22708162373383922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106555493 and 106555502.

It is not an unprimeable number, because it can be changed into a prime (106555571) 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, 406570 + ... + 406831.

It is an arithmetic number, because the mean of its divisors is an integer number (26842266).

Almost surely, 2^106555531 is an apocalyptic number.

106555531 is a deficient number, since it is larger than the sum of its proper divisors (813533).

106555531 is an equidigital number, since it uses as much as digits as its factorization.

106555531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813532.

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 106555531 is about 10322.5738553909. The cubic root of 106555531 is about 474.0876759842.

The spelling of 106555531 in words is "one hundred six million, five hundred fifty-five thousand, five hundred thirty-one".