53305861 has 4 divisors (see below), whose sum is σ = 60920992. Its totient is φ = 45690732.

The previous prime is 53305823. The next prime is 53305907. The reversal of 53305861 is 16850335.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53305861 - 2⁹ = 53305349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53305801) 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, 3807555 + ... + 3807568.

It is an arithmetic number, because the mean of its divisors is an integer number (15230248).

Almost surely, 2^53305861 is an apocalyptic number.

It is an amenable number.

53305861 is a deficient number, since it is larger than the sum of its proper divisors (7615131).

53305861 is an equidigital number, since it uses as much as digits as its factorization.

53305861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7615130.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 53305861 is about 7301.0862890395. The cubic root of 53305861 is about 376.3497693133.

The spelling of 53305861 in words is "fifty-three million, three hundred five thousand, eight hundred sixty-one".