53480905 has 4 divisors (see below), whose sum is σ = 64177092. Its totient is φ = 42784720.

The previous prime is 53480899. The next prime is 53480909. The reversal of 53480905 is 50908435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50908435 = 5 ⋅10181687.

It can be written as a sum of positive squares in 2 ways, for example, as 28440889 + 25040016 = 5333^2 + 5004^2 .

It is not a de Polignac number, because 53480905 - 2³ = 53480897 is a prime.

It is a super-3 number, since 3×53480905³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53480909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5348086 + ... + 5348095.

It is an arithmetic number, because the mean of its divisors is an integer number (16044273).

Almost surely, 2^53480905 is an apocalyptic number.

It is an amenable number.

53480905 is a deficient number, since it is larger than the sum of its proper divisors (10696187).

53480905 is a wasteful number, since it uses less digits than its factorization.

53480905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10696186.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 53480905 is about 7313.0639953442. The cubic root of 53480905 is about 376.7612674736.

The spelling of 53480905 in words is "fifty-three million, four hundred eighty thousand, nine hundred five".