253442530520 has 16 divisors (see below), whose sum is σ = 570245693760. Its totient is φ = 101377012192.

The previous prime is 253442530513. The next prime is 253442530543. The reversal of 253442530520 is 25035244352.

It is a super-2 number, since 2×253442530520² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 3168031592 + ... + 3168031671.

It is an arithmetic number, because the mean of its divisors is an integer number (35640355860).

Almost surely, 2^253442530520 is an apocalyptic number.

253442530520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253442530520 is an abundant number, since it is smaller than the sum of its proper divisors (316803163240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253442530520 is a wasteful number, since it uses less digits than its factorization.

253442530520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336063274 (or 6336063270 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 253442530520 its reverse (25035244352), we get a palindrome (278477774872).

The spelling of 253442530520 in words is "two hundred fifty-three billion, four hundred forty-two million, five hundred thirty thousand, five hundred twenty".