1533485520 has 480 divisors, whose sum is σ = 6239600640. Its totient is φ = 342766080.

The previous prime is 1533485491. The next prime is 1533485533. The reversal of 1533485520 is 255843351.

1533485520 is a `hidden beast` number, since 1 + 53 + 3 + 4 + 85 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8028625 + ... + 8028815.

It is an arithmetic number, because the mean of its divisors is an integer number (12999168).

Almost surely, 2^1533485520 is an apocalyptic number.

1533485520 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 1533485520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3119800320).

1533485520 is an abundant number, since it is smaller than the sum of its proper divisors (4706115120).

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

1533485520 is a wasteful number, since it uses less digits than its factorization.

1533485520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 1533485520 is about 39159.7436150953. The cubic root of 1533485520 is about 1153.1697103426.

The spelling of 1533485520 in words is "one billion, five hundred thirty-three million, four hundred eighty-five thousand, five hundred twenty".