1555251132 has 24 divisors (see below), whose sum is σ = 3637312336. Its totient is φ = 517218048.

The previous prime is 1555251119. The next prime is 1555251193. The reversal of 1555251132 is 2311525551.

It is a self number, because there is not a number n which added to its sum of digits gives 1555251132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144463 + ... + 154854.

Almost surely, 2^1555251132 is an apocalyptic number.

1555251132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1555251132 is an abundant number, since it is smaller than the sum of its proper divisors (2082061204).

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

1555251132 is a wasteful number, since it uses less digits than its factorization.

1555251132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299757 (or 299755 counting only the distinct ones).

The product of its digits is 7500, while the sum is 30.

The square root of 1555251132 is about 39436.6724255483. The cubic root of 1555251132 is about 1158.5999587650.

Adding to 1555251132 its reverse (2311525551), we get a palindrome (3866776683).

The spelling of 1555251132 in words is "one billion, five hundred fifty-five million, two hundred fifty-one thousand, one hundred thirty-two".