253734545 has 4 divisors (see below), whose sum is σ = 304481460. Its totient is φ = 202987632.

The previous prime is 253734541. The next prime is 253734577. The reversal of 253734545 is 545437352.

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 198499921 + 55234624 = 14089^2 + 7432^2 .

It is a cyclic number.

It is not a de Polignac number, because 253734545 - 2² = 253734541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253734499 and 253734508.

It is not an unprimeable number, because it can be changed into a prime (253734541) 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, 25373450 + ... + 25373459.

It is an arithmetic number, because the mean of its divisors is an integer number (76120365).

Almost surely, 2^253734545 is an apocalyptic number.

It is an amenable number.

253734545 is a deficient number, since it is larger than the sum of its proper divisors (50746915).

253734545 is an equidigital number, since it uses as much as digits as its factorization.

253734545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50746914.

The product of its digits is 252000, while the sum is 38.

The square root of 253734545 is about 15929.0472094222. The cubic root of 253734545 is about 633.0818550677.

The spelling of 253734545 in words is "two hundred fifty-three million, seven hundred thirty-four thousand, five hundred forty-five".