1155253360 has 80 divisors (see below), whose sum is σ = 2850487200. Its totient is φ = 433922048.

The previous prime is 1155253339. The next prime is 1155253381. The reversal of 1155253360 is 633525511.

It is an interprime number because it is at equal distance from previous prime (1155253339) and next prime (1155253381).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1155253360² = 2669220651582579200, which contains 22 as substring.

It is a congruent number.

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, 895596 + ... + 896884.

It is an arithmetic number, because the mean of its divisors is an integer number (35631090).

Almost surely, 2^1155253360 is an apocalyptic number.

1155253360 is a gapful number since it is divisible by the number (10) 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 1155253360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1425243600).

1155253360 is an abundant number, since it is smaller than the sum of its proper divisors (1695233840).

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

1155253360 is a wasteful number, since it uses less digits than its factorization.

1155253360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978 (or 1972 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 1155253360 is about 33989.0182264802. The cubic root of 1155253360 is about 1049.2824606355.

Adding to 1155253360 its reverse (633525511), we get a palindrome (1788778871).

The spelling of 1155253360 in words is "one billion, one hundred fifty-five million, two hundred fifty-three thousand, three hundred sixty".