1355530520 has 128 divisors (see below), whose sum is σ = 3257755200. Its totient is φ = 506880000.

The previous prime is 1355530511. The next prime is 1355530523. The reversal of 1355530520 is 250355531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355530523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5400395 + ... + 5400645.

Almost surely, 2^1355530520 is an apocalyptic number.

1355530520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355530520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1628877600).

1355530520 is an abundant number, since it is smaller than the sum of its proper divisors (1902224680).

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

1355530520 is a wasteful number, since it uses less digits than its factorization.

1355530520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 1355530520 is about 36817.5300638161. The cubic root of 1355530520 is about 1106.7166236863.

The spelling of 1355530520 in words is "one billion, three hundred fifty-five million, five hundred thirty thousand, five hundred twenty".