53791009 has 4 divisors (see below), whose sum is σ = 56955204. Its totient is φ = 50626816.

The previous prime is 53790973. The next prime is 53791037. The reversal of 53791009 is 90019735.

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 31888609 + 21902400 = 5647^2 + 4680^2 .

It is not a de Polignac number, because 53791009 - 2¹⁵ = 53758241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53791039) 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, 1582072 + ... + 1582105.

It is an arithmetic number, because the mean of its divisors is an integer number (14238801).

Almost surely, 2^53791009 is an apocalyptic number.

It is an amenable number.

53791009 is a deficient number, since it is larger than the sum of its proper divisors (3164195).

53791009 is a wasteful number, since it uses less digits than its factorization.

53791009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164194.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 53791009 is about 7334.2354066392. The cubic root of 53791009 is about 377.4880694444.

The spelling of 53791009 in words is "fifty-three million, seven hundred ninety-one thousand, nine".