253051565 has 8 divisors (see below), whose sum is σ = 327020568. Its totient is φ = 186868800.

The previous prime is 253051553. The next prime is 253051577. The reversal of 253051565 is 565150352.

253051565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (253051553) and next prime (253051577).

It can be written as a sum of positive squares in 4 ways, for example, as 32410249 + 220641316 = 5693^2 + 14854^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253051565 - 2¹⁰ = 253050541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946486 + ... + 1946615.

It is an arithmetic number, because the mean of its divisors is an integer number (40877571).

Almost surely, 2^253051565 is an apocalyptic number.

It is an amenable number.

253051565 is a deficient number, since it is larger than the sum of its proper divisors (73969003).

253051565 is a wasteful number, since it uses less digits than its factorization.

253051565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3893119.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 253051565 is about 15907.5945698902. The cubic root of 253051565 is about 632.5133202421.

The spelling of 253051565 in words is "two hundred fifty-three million, fifty-one thousand, five hundred sixty-five".