1145505541 has 8 divisors (see below), whose sum is σ = 1149954624. Its totient is φ = 1141066080.

The previous prime is 1145505503. The next prime is 1145505587. The reversal of 1145505541 is 1455055411.

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

It is a cyclic number.

It is not a de Polignac number, because 1145505541 - 2¹¹ = 1145503493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145505341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308506 + ... + 312196.

It is an arithmetic number, because the mean of its divisors is an integer number (143744328).

Almost surely, 2^1145505541 is an apocalyptic number.

It is an amenable number.

1145505541 is a deficient number, since it is larger than the sum of its proper divisors (4449083).

1145505541 is an equidigital number, since it uses as much as digits as its factorization.

1145505541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 1145505541 is about 33845.3178593436. The cubic root of 1145505541 is about 1046.3229023187.

The spelling of 1145505541 in words is "one billion, one hundred forty-five million, five hundred five thousand, five hundred forty-one".