1155545542 has 16 divisors (see below), whose sum is σ = 1803468240. Its totient is φ = 554620192.

The previous prime is 1155545533. The next prime is 1155545551. The reversal of 1155545542 is 2455455511.

It is an interprime number because it is at equal distance from previous prime (1155545533) and next prime (1155545551).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 47548 + ... + 67615.

It is an arithmetic number, because the mean of its divisors is an integer number (112716765).

Almost surely, 2^1155545542 is an apocalyptic number.

1155545542 is a deficient number, since it is larger than the sum of its proper divisors (647922698).

1155545542 is a wasteful number, since it uses less digits than its factorization.

1155545542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115367.

The product of its digits is 100000, while the sum is 37.

The square root of 1155545542 is about 33993.3161371467. The cubic root of 1155545542 is about 1049.3709132687.

The spelling of 1155545542 in words is "one billion, one hundred fifty-five million, five hundred forty-five thousand, five hundred forty-two".