1101245545 has 4 divisors (see below), whose sum is σ = 1321494660. Its totient is φ = 880996432.

The previous prime is 1101245539. The next prime is 1101245569. The reversal of 1101245545 is 5455421011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5455421011 = 2381 ⋅2291231.

It can be written as a sum of positive squares in 2 ways, for example, as 520387344 + 580858201 = 22812^2 + 24101^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101245545 - 2⁷ = 1101245417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110124550 + ... + 110124559.

It is an arithmetic number, because the mean of its divisors is an integer number (330373665).

Almost surely, 2^1101245545 is an apocalyptic number.

It is an amenable number.

1101245545 is a deficient number, since it is larger than the sum of its proper divisors (220249115).

1101245545 is an equidigital number, since it uses as much as digits as its factorization.

1101245545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220249114.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1101245545 is about 33185.0198884979. The cubic root of 1101245545 is about 1032.6695901079.

Adding to 1101245545 its reverse (5455421011), we get a palindrome (6556666556).

The spelling of 1101245545 in words is "one billion, one hundred one million, two hundred forty-five thousand, five hundred forty-five".