545455111 has 4 divisors (see below), whose sum is σ = 545522472. Its totient is φ = 545387752.

The previous prime is 545455093. The next prime is 545455117. The reversal of 545455111 is 111554545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545455111 - 2¹⁹ = 544930823 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 (545455117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19561 + ... + 38386.

It is an arithmetic number, because the mean of its divisors is an integer number (136380618).

Almost surely, 2^545455111 is an apocalyptic number.

545455111 is a deficient number, since it is larger than the sum of its proper divisors (67361).

545455111 is an equidigital number, since it uses as much as digits as its factorization.

545455111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67360.

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

The square root of 545455111 is about 23354.9804324474. The cubic root of 545455111 is about 817.0582230274.

The spelling of 545455111 in words is "five hundred forty-five million, four hundred fifty-five thousand, one hundred eleven".