106253781 has 4 divisors (see below), whose sum is σ = 141671712. Its totient is φ = 70835852.

The previous prime is 106253773. The next prime is 106253783. The reversal of 106253781 is 187352601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 106253781 - 2³ = 106253773 is a prime.

It is a super-2 number, since 2×106253781² = 22579731953591922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106253783) 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, 17708961 + ... + 17708966.

It is an arithmetic number, because the mean of its divisors is an integer number (35417928).

Almost surely, 2^106253781 is an apocalyptic number.

It is an amenable number.

106253781 is a deficient number, since it is larger than the sum of its proper divisors (35417931).

106253781 is an equidigital number, since it uses as much as digits as its factorization.

106253781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35417930.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 106253781 is about 10307.9474678522. The cubic root of 106253781 is about 473.6397367557.

The spelling of 106253781 in words is "one hundred six million, two hundred fifty-three thousand, seven hundred eighty-one".