1533055540 has 24 divisors (see below), whose sum is σ = 3220277760. Its totient is φ = 613058208.

The previous prime is 1533055523. The next prime is 1533055577. The reversal of 1533055540 is 455503351.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90589 + ... + 106171.

It is an arithmetic number, because the mean of its divisors is an integer number (134178240).

Almost surely, 2^1533055540 is an apocalyptic number.

1533055540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1533055540 is an abundant number, since it is smaller than the sum of its proper divisors (1687222220).

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

1533055540 is a wasteful number, since it uses less digits than its factorization.

1533055540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20511 (or 20509 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 1533055540 is about 39154.2531533932. The cubic root of 1533055540 is about 1153.0619196795.

Adding to 1533055540 its reverse (455503351), we get a palindrome (1988558891).

The spelling of 1533055540 in words is "one billion, five hundred thirty-three million, fifty-five thousand, five hundred forty".