105240053 has 4 divisors (see below), whose sum is σ = 106325100. Its totient is φ = 104155008.

The previous prime is 105240017. The next prime is 105240061. The reversal of 105240053 is 350042501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350042501 = 2293 ⋅152657.

It can be written as a sum of positive squares in 2 ways, for example, as 14190289 + 91049764 = 3767^2 + 9542^2 .

It is a cyclic number.

It is not a de Polignac number, because 105240053 - 2¹⁴ = 105223669 is a prime.

It is a super-2 number, since 2×105240053² = 22150937510885618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105240253) 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, 542378 + ... + 542571.

It is an arithmetic number, because the mean of its divisors is an integer number (26581275).

Almost surely, 2^105240053 is an apocalyptic number.

It is an amenable number.

105240053 is a deficient number, since it is larger than the sum of its proper divisors (1085047).

105240053 is an equidigital number, since it uses as much as digits as its factorization.

105240053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085046.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 105240053 is about 10258.6574657701. The cubic root of 105240053 is about 472.1286471245.

Adding to 105240053 its reverse (350042501), we get a palindrome (455282554).

The spelling of 105240053 in words is "one hundred five million, two hundred forty thousand, fifty-three".