545111001 has 24 divisors (see below), whose sum is σ = 834748200. Its totient is φ = 341600256.

The previous prime is 545110963. The next prime is 545111009. The reversal of 545111001 is 100111545.

It is a happy number.

545111001 is a `hidden beast` number, since 54 + 511 + 100 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 117614025 + 427496976 = 10845^2 + 20676^2 .

It is not a de Polignac number, because 545111001 - 2⁷ = 545110873 is a prime.

It is a super-2 number, since 2×545111001² = 594292006822444002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (545111009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156325 + ... + 159773.

It is an arithmetic number, because the mean of its divisors is an integer number (34781175).

Almost surely, 2^545111001 is an apocalyptic number.

545111001 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

545111001 is a deficient number, since it is larger than the sum of its proper divisors (289637199).

545111001 is a wasteful number, since it uses less digits than its factorization.

545111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505 (or 4502 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 545111001 is about 23347.6123190360. The cubic root of 545111001 is about 816.8863683415.

Adding to 545111001 its reverse (100111545), we get a palindrome (645222546).

The spelling of 545111001 in words is "five hundred forty-five million, one hundred eleven thousand, one".