1155550542 has 8 divisors (see below), whose sum is σ = 2311101096. Its totient is φ = 385183512.

The previous prime is 1155550483. The next prime is 1155550547. The reversal of 1155550542 is 2450555511.

It is a sphenic number, since it is the product of 3 distinct primes.

1155550542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155550547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96295873 + ... + 96295884.

It is an arithmetic number, because the mean of its divisors is an integer number (288887637).

Almost surely, 2^1155550542 is an apocalyptic number.

1155550542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1155550542 is a wasteful number, since it uses less digits than its factorization.

1155550542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192591762.

The product of its (nonzero) digits is 25000, while the sum is 33.

The square root of 1155550542 is about 33993.3896809365. The cubic root of 1155550542 is about 1049.3724267953.

The spelling of 1155550542 in words is "one billion, one hundred fifty-five million, five hundred fifty thousand, five hundred forty-two".