1521141540 has 48 divisors (see below), whose sum is σ = 4331396160. Its totient is φ = 398761600.

The previous prime is 1521141529. The next prime is 1521141613. The reversal of 1521141540 is 451411251.

It is a self number, because there is not a number n which added to its sum of digits gives 1521141540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211311 + ... + 218390.

It is an arithmetic number, because the mean of its divisors is an integer number (90237420).

Almost surely, 2^1521141540 is an apocalyptic number.

1521141540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1521141540 is an abundant number, since it is smaller than the sum of its proper divisors (2810254620).

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

1521141540 is a wasteful number, since it uses less digits than its factorization.

1521141540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429772 (or 429770 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1521141540 is about 39001.8145731708. The cubic root of 1521141540 is about 1150.0671769202.

Adding to 1521141540 its reverse (451411251), we get a palindrome (1972552791).

The spelling of 1521141540 in words is "one billion, five hundred twenty-one million, one hundred forty-one thousand, five hundred forty".