106565251 has 4 divisors (see below), whose sum is σ = 114762592. Its totient is φ = 98367912.

The previous prime is 106565237. The next prime is 106565257. The reversal of 106565251 is 152565601.

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 106565251 - 2¹⁵ = 106532483 is a prime.

It is a super-2 number, since 2×106565251² = 22712305441386002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106565257) 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, 4098651 + ... + 4098676.

It is an arithmetic number, because the mean of its divisors is an integer number (28690648).

Almost surely, 2^106565251 is an apocalyptic number.

106565251 is a deficient number, since it is larger than the sum of its proper divisors (8197341).

106565251 is an equidigital number, since it uses as much as digits as its factorization.

106565251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8197340.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 106565251 is about 10323.0446574642. The cubic root of 106565251 is about 474.1020909785.

The spelling of 106565251 in words is "one hundred six million, five hundred sixty-five thousand, two hundred fifty-one".