253420203530 has 48 divisors (see below), whose sum is σ = 504881407800. Its totient is φ = 91041539328.

The previous prime is 253420203523. The next prime is 253420203539. The reversal of 253420203530 is 35302024352.

It can be written as a sum of positive squares in 12 ways, for example, as 63710303281 + 189709900249 = 252409^2 + 435557^2 .

It is a junction number, because it is equal to n+sod(n) for n = 253420203493 and 253420203502.

It is not an unprimeable number, because it can be changed into a prime (253420203539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534005 + ... + 889944.

Almost surely, 2^253420203530 is an apocalyptic number.

253420203530 is a deficient number, since it is larger than the sum of its proper divisors (251461204270).

253420203530 is a wasteful number, since it uses less digits than its factorization.

253420203530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424043 (or 1424006 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 29.

Adding to 253420203530 its reverse (35302024352), we get a palindrome (288722227882).

The spelling of 253420203530 in words is "two hundred fifty-three billion, four hundred twenty million, two hundred three thousand, five hundred thirty".