253531341505 has 32 divisors (see below), whose sum is σ = 331420287744. Its totient is φ = 185069857536.

The previous prime is 253531341499. The next prime is 253531341509. The reversal of 253531341505 is 505143135352.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253531341505 is a prime.

It is a super-2 number, since 2×253531341505² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253531341509) 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 31 ways as a sum of consecutive naturals, for example, 3695122 + ... + 3763108.

It is an arithmetic number, because the mean of its divisors is an integer number (10356883992).

Almost surely, 2^253531341505 is an apocalyptic number.

It is an amenable number.

253531341505 is a deficient number, since it is larger than the sum of its proper divisors (77888946239).

253531341505 is a wasteful number, since it uses less digits than its factorization.

253531341505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68665.

The product of its (nonzero) digits is 135000, while the sum is 37.

Adding to 253531341505 its reverse (505143135352), we get a palindrome (758674476857).

The spelling of 253531341505 in words is "two hundred fifty-three billion, five hundred thirty-one million, three hundred forty-one thousand, five hundred five".