53809845 has 32 divisors (see below), whose sum is σ = 92223360. Its totient is φ = 26695680.

The previous prime is 53809837. The next prime is 53809859. The reversal of 53809845 is 54890835.

53809845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53809845 - 2³ = 53809837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53809797 and 53809806.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 21510 + ... + 23880.

It is an arithmetic number, because the mean of its divisors is an integer number (2881980).

Almost surely, 2^53809845 is an apocalyptic number.

It is an amenable number.

53809845 is a deficient number, since it is larger than the sum of its proper divisors (38413515).

53809845 is a wasteful number, since it uses less digits than its factorization.

53809845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 53809845 is about 7335.5194090126. The cubic root of 53809845 is about 377.5321259737.

It can be divided in two parts, 5380 and 9845, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 53809845 in words is "fifty-three million, eight hundred nine thousand, eight hundred forty-five".