1155292540 has 48 divisors (see below), whose sum is σ = 2461415040. Its totient is φ = 455436800.

The previous prime is 1155292519. The next prime is 1155292543. The reversal of 1155292540 is 452925511.

It is a junction number, because it is equal to n+sod(n) for n = 1155292496 and 1155292505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155292543) 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, 481584 + ... + 483976.

It is an arithmetic number, because the mean of its divisors is an integer number (51279480).

Almost surely, 2^1155292540 is an apocalyptic number.

1155292540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155292540 is an abundant number, since it is smaller than the sum of its proper divisors (1306122500).

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

1155292540 is a wasteful number, since it uses less digits than its factorization.

1155292540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742 (or 2740 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 1155292540 is about 33989.5945842253. The cubic root of 1155292540 is about 1049.2943225131.

The spelling of 1155292540 in words is "one billion, one hundred fifty-five million, two hundred ninety-two thousand, five hundred forty".