105511144 has 8 divisors (see below), whose sum is σ = 197833410. Its totient is φ = 52755568.

The previous prime is 105511139. The next prime is 105511157. The reversal of 105511144 is 441115501.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 105308644 + 202500 = 10262^2 + 450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×105511144² = 22265203016377472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6594439 + ... + 6594454.

Almost surely, 2^105511144 is an apocalyptic number.

It is an amenable number.

105511144 is a deficient number, since it is larger than the sum of its proper divisors (92322266).

105511144 is a wasteful number, since it uses less digits than its factorization.

105511144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13188899 (or 13188895 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 105511144 is about 10271.8617591944. The cubic root of 105511144 is about 472.5336896371.

Adding to 105511144 its reverse (441115501), we get a palindrome (546626645).

The spelling of 105511144 in words is "one hundred five million, five hundred eleven thousand, one hundred forty-four".