253524645 has 72 divisors (see below), whose sum is σ = 488864376. Its totient is φ = 121440000.

The previous prime is 253524643. The next prime is 253524647. The reversal of 253524645 is 546425352.

253524645 is a `hidden beast` number, since 2 + 5 + 3 + 5 + 2 + 4 + 645 = 666.

It is an interprime number because it is at equal distance from previous prime (253524643) and next prime (253524647).

It can be written as a sum of positive squares in 4 ways, for example, as 63250209 + 190274436 = 7953^2 + 13794^2 .

It is not a de Polignac number, because 253524645 - 2¹ = 253524643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253524643) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 549715 + ... + 550175.

It is an arithmetic number, because the mean of its divisors is an integer number (6789783).

Almost surely, 2^253524645 is an apocalyptic number.

It is an amenable number.

253524645 is a deficient number, since it is larger than the sum of its proper divisors (235339731).

253524645 is a wasteful number, since it uses less digits than its factorization.

253524645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 581 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 253524645 is about 15922.4572538286. The cubic root of 253524645 is about 632.9072361687.

Adding to 253524645 its reverse (546425352), we get a palindrome (799949997).

The spelling of 253524645 in words is "two hundred fifty-three million, five hundred twenty-four thousand, six hundred forty-five".