53820305 has 32 divisors (see below), whose sum is σ = 82418688. Its totient is φ = 32760000.

The previous prime is 53820301. The next prime is 53820307. The reversal of 53820305 is 50302835.

It is not a de Polignac number, because 53820305 - 2² = 53820301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53820301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14930 + ... + 18180.

It is an arithmetic number, because the mean of its divisors is an integer number (2575584).

Almost surely, 2^53820305 is an apocalyptic number.

53820305 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53820305 is a deficient number, since it is larger than the sum of its proper divisors (28598383).

53820305 is a wasteful number, since it uses less digits than its factorization.

53820305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 53820305 is about 7336.2323436489. The cubic root of 53820305 is about 377.5565869882.

The spelling of 53820305 in words is "fifty-three million, eight hundred twenty thousand, three hundred five".