1555133412 has 48 divisors (see below), whose sum is σ = 4390968960. Its totient is φ = 418186752.

The previous prime is 1555133389. The next prime is 1555133441. The reversal of 1555133412 is 2143315551.

It is a self number, because there is not a number n which added to its sum of digits gives 1555133412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543087 + ... + 545942.

It is an arithmetic number, because the mean of its divisors is an integer number (91478520).

Almost surely, 2^1555133412 is an apocalyptic number.

1555133412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1555133412 is an abundant number, since it is smaller than the sum of its proper divisors (2835835548).

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

1555133412 is a wasteful number, since it uses less digits than its factorization.

1555133412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089060 (or 1089058 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 1555133412 is about 39435.1798778705. The cubic root of 1555133412 is about 1158.5707257951.

Adding to 1555133412 its reverse (2143315551), we get a palindrome (3698448963).

The spelling of 1555133412 in words is "one billion, five hundred fifty-five million, one hundred thirty-three thousand, four hundred twelve".