553255326520 has 256 divisors, whose sum is σ = 1409598288000. Its totient is φ = 194019065856.

The previous prime is 553255326479. The next prime is 553255326521. The reversal of 553255326520 is 25623552355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553255326521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 261832984 + ... + 261835096.

Almost surely, 2^553255326520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 553255326520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704799144000).

553255326520 is an abundant number, since it is smaller than the sum of its proper divisors (856342961480).

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

553255326520 is a wasteful number, since it uses less digits than its factorization.

553255326520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442 (or 2438 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 43.

Adding to 553255326520 its reverse (25623552355), we get a palindrome (578878878875).

The spelling of 553255326520 in words is "five hundred fifty-three billion, two hundred fifty-five million, three hundred twenty-six thousand, five hundred twenty".