253565485 has 4 divisors (see below), whose sum is σ = 304278588. Its totient is φ = 202852384.

The previous prime is 253565483. The next prime is 253565509. The reversal of 253565485 is 584565352.

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 168298729 + 85266756 = 12973^2 + 9234^2 .

It is a cyclic number.

It is not a de Polignac number, because 253565485 - 2¹ = 253565483 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 (253565483) 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, 25356544 + ... + 25356553.

It is an arithmetic number, because the mean of its divisors is an integer number (76069647).

Almost surely, 2^253565485 is an apocalyptic number.

It is an amenable number.

253565485 is a deficient number, since it is larger than the sum of its proper divisors (50713103).

253565485 is an equidigital number, since it uses as much as digits as its factorization.

253565485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50713102.

The product of its digits is 720000, while the sum is 43.

The square root of 253565485 is about 15923.7396675530. The cubic root of 253565485 is about 632.9412191157.

The spelling of 253565485 in words is "two hundred fifty-three million, five hundred sixty-five thousand, four hundred eighty-five".