553131520 has 80 divisors (see below), whose sum is σ = 1331946000. Its totient is φ = 220299264.

The previous prime is 553131503. The next prime is 553131541. The reversal of 553131520 is 25131355.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108231 + ... + 1108729.

It is an arithmetic number, because the mean of its divisors is an integer number (16649325).

Almost surely, 2^553131520 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 553131520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665973000).

553131520 is an abundant number, since it is smaller than the sum of its proper divisors (778814480).

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

553131520 is an equidigital number, since it uses as much as digits as its factorization.

553131520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 553131520 is about 23518.7482660111. The cubic root of 553131520 is about 820.8733111046.

Adding to 553131520 its reverse (25131355), we get a palindrome (578262875).

It can be divided in two parts, 553131 and 520, that multiplied together give a triangular number (287628120 = T₂₃₉₈₄).

The spelling of 553131520 in words is "five hundred fifty-three million, one hundred thirty-one thousand, five hundred twenty".