113145253 has 4 divisors (see below), whose sum is σ = 121848748. Its totient is φ = 104441760.

The previous prime is 113145239. The next prime is 113145283. The reversal of 113145253 is 352541311.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11175649 + 101969604 = 3343^2 + 10098^2 .

It is a cyclic number.

It is not a de Polignac number, because 113145253 - 2²¹ = 111048101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113145233) by changing a digit.

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, 4351728 + ... + 4351753.

It is an arithmetic number, because the mean of its divisors is an integer number (30462187).

Almost surely, 2^113145253 is an apocalyptic number.

113145253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

113145253 is a deficient number, since it is larger than the sum of its proper divisors (8703495).

113145253 is an equidigital number, since it uses as much as digits as its factorization.

113145253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8703494.

The product of its digits is 1800, while the sum is 25.

The square root of 113145253 is about 10636.9757450132. The cubic root of 113145253 is about 483.6658739950.

Adding to 113145253 its reverse (352541311), we get a palindrome (465686564).

The spelling of 113145253 in words is "one hundred thirteen million, one hundred forty-five thousand, two hundred fifty-three".