1156545455 has 16 divisors (see below), whose sum is σ = 1559597760. Its totient is φ = 816930048.

The previous prime is 1156545451. The next prime is 1156545457. The reversal of 1156545455 is 5545456511.

It is a cyclic number.

It is not a de Polignac number, because 1156545455 - 2² = 1156545451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156545451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385310 + ... + 388299.

It is an arithmetic number, because the mean of its divisors is an integer number (97474860).

Almost surely, 2^1156545455 is an apocalyptic number.

1156545455 is a deficient number, since it is larger than the sum of its proper divisors (403052305).

1156545455 is a wasteful number, since it uses less digits than its factorization.

1156545455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773650.

The product of its digits is 300000, while the sum is 41.

The square root of 1156545455 is about 34008.0204510642. The cubic root of 1156545455 is about 1049.6735054418.

The spelling of 1156545455 in words is "one billion, one hundred fifty-six million, five hundred forty-five thousand, four hundred fifty-five".