53105081 has 4 divisors (see below), whose sum is σ = 53129700. Its totient is φ = 53080464.

The previous prime is 53105069. The next prime is 53105111. The reversal of 53105081 is 18050135.

53105081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13213225 + 39891856 = 3635^2 + 6316^2 .

It is a cyclic number.

It is not a de Polignac number, because 53105081 - 2¹⁰ = 53104057 is a prime.

It is a super-2 number, since 2×53105081² = 5640299256033122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53105011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8726 + ... + 13503.

It is an arithmetic number, because the mean of its divisors is an integer number (13282425).

Almost surely, 2^53105081 is an apocalyptic number.

It is an amenable number.

53105081 is a deficient number, since it is larger than the sum of its proper divisors (24619).

53105081 is a wasteful number, since it uses less digits than its factorization.

53105081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24618.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 53105081 is about 7287.3233083211. The cubic root of 53105081 is about 375.8766595031.

The spelling of 53105081 in words is "fifty-three million, one hundred five thousand, eighty-one".