1253534113 has 4 divisors (see below), whose sum is σ = 1349959828. Its totient is φ = 1157108400.

The previous prime is 1253534099. The next prime is 1253534141. The reversal of 1253534113 is 3114353521.

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 607967649 + 645566464 = 24657^2 + 25408^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253534113 - 2²¹ = 1251436961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253534413) 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, 48212838 + ... + 48212863.

It is an arithmetic number, because the mean of its divisors is an integer number (337489957).

Almost surely, 2^1253534113 is an apocalyptic number.

1253534113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1253534113 is a deficient number, since it is larger than the sum of its proper divisors (96425715).

1253534113 is an equidigital number, since it uses as much as digits as its factorization.

1253534113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96425714.

The product of its digits is 5400, while the sum is 28.

The square root of 1253534113 is about 35405.2836876080. The cubic root of 1253534113 is about 1078.2315918450.

Adding to 1253534113 its reverse (3114353521), we get a palindrome (4367887634).

The spelling of 1253534113 in words is "one billion, two hundred fifty-three million, five hundred thirty-four thousand, one hundred thirteen".