1155255132 has 48 divisors (see below), whose sum is σ = 2833125120. Its totient is φ = 365680128.

The previous prime is 1155255131. The next prime is 1155255133. The reversal of 1155255132 is 2315525511.

It is an interprime number because it is at equal distance from previous prime (1155255131) and next prime (1155255133).

It is a super-2 number, since 2×1155255132² = 2669228840024674848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1155255132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155255131) by changing a digit.

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, 23308 + ... + 53420.

It is an arithmetic number, because the mean of its divisors is an integer number (59023440).

Almost surely, 2^1155255132 is an apocalyptic number.

1155255132 is a gapful number since it is divisible by the number (12) 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 1155255132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1416562560).

1155255132 is an abundant number, since it is smaller than the sum of its proper divisors (1677869988).

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

1155255132 is a wasteful number, since it uses less digits than its factorization.

1155255132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30282 (or 30280 counting only the distinct ones).

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

The square root of 1155255132 is about 33989.0442937132. The cubic root of 1155255132 is about 1049.2829971203.

The spelling of 1155255132 in words is "one billion, one hundred fifty-five million, two hundred fifty-five thousand, one hundred thirty-two".